/* ===========================
   CSS Variables
   =========================== */
:root {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #2a2a2a;
    --color-neon-cyan: #00ffff;
    --color-neon-purple: #b000ff;
    --color-neon-pink: #ff00ff;
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-glass: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --font-primary: 'Courier New', monospace;
    --transition-speed: 0.3s;
}

/* ===========================
   Reset & Base Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    padding-top: 56px; /* offset for fixed nav */
}

/* ===========================
   Navigation
   =========================== */
#site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-glass-border);
    transition: background var(--transition-speed), box-shadow var(--transition-speed);
}

#site-nav.scrolled {
    background: rgba(10, 10, 10, 0.97);
    box-shadow: 0 2px 24px rgba(0, 0, 0, 0.55);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 56px;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo {
    border-radius: 4px;
    filter: drop-shadow(0 0 6px rgba(0, 255, 255, 0.4));
}

.nav-brand-text {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--color-neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    padding: 0;
    flex: 1;
}

.nav-link {
    display: block;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.4rem 0.7rem;
    border-radius: 4px;
    transition: color var(--transition-speed), background var(--transition-speed);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-neon-cyan);
    background: rgba(0, 255, 255, 0.08);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 0.42rem 1.1rem;
    font-family: var(--font-primary);
    font-size: 0.78rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border: 1px solid var(--color-neon-cyan);
    border-radius: 999px;
    color: var(--color-neon-cyan);
    background: transparent;
    transition: all var(--transition-speed);
    flex-shrink: 0;
    white-space: nowrap;
}

.nav-cta:hover {
    background: rgba(0, 255, 255, 0.1);
    box-shadow: 0 0 16px rgba(0, 255, 255, 0.25);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-neon-cyan);
    border-radius: 1px;
    transition: all var(--transition-speed);
}

@media (max-width: 900px) {
    .nav-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 0.7rem 1.25rem;
        gap: 0;
        position: relative;
    }

    .nav-brand {
        flex: 1;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        border-top: 1px solid var(--color-glass-border);
        margin-top: 0.6rem;
        padding: 0.5rem 0 0.25rem;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-link {
        padding: 0.55rem 0.5rem;
    }
}

/* ===========================
   Canvas Background
   =========================== */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.3;
}

/* ===========================
   Hero Section
   =========================== */
#hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.hero-content {
    max-width: 900px;
}

.hero-logo-wrap {
    position: relative;
    display: inline-block;
    margin: 0 auto 1.5rem auto;
    padding: 4px;
    border-radius: 14px;
    overflow: hidden;
    transition: filter var(--transition-speed), box-shadow var(--transition-speed);
    filter: drop-shadow(0 0 15px rgba(0, 255, 255, 0.25));
}

.hero-logo-wrap:hover {
    filter: drop-shadow(0 0 25px rgba(0, 255, 255, 0.5)) drop-shadow(0 0 50px rgba(176, 0, 255, 0.3));
}

.hero-logo-wrap::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 14px;
    background: conic-gradient(from 0deg, var(--color-neon-cyan), var(--color-neon-purple), var(--color-neon-pink), var(--color-neon-cyan));
    opacity: 0;
    transition: opacity var(--transition-speed);
    pointer-events: none;
    z-index: 0;
    animation: border-spin 3s linear infinite;
    animation-play-state: paused;
}

.hero-logo-wrap:hover::before {
    opacity: 1;
    animation-play-state: running;
}

.hero-logo-wrap::after {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 9px;
    background: var(--color-bg-primary);
    z-index: 0;
    pointer-events: none;
}

@keyframes border-spin {
    to { transform: rotate(360deg); }
}

.hero-logo {
    display: block;
    width: clamp(80px, 20vw, 128px);
    height: auto;
    border-radius: 8px;
    filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.4)) drop-shadow(0 0 40px rgba(0, 255, 255, 0.2));
    transition: filter var(--transition-speed), opacity var(--transition-speed);
}

.hero-logo-wrap:hover .hero-logo {
    filter: drop-shadow(0 0 30px rgba(0, 255, 255, 0.7)) drop-shadow(0 0 60px rgba(0, 255, 255, 0.4)) drop-shadow(0 0 90px rgba(176, 0, 255, 0.3));
}

.hero-logo-default {
    position: relative;
    z-index: 1;
}

.hero-logo-hover {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    z-index: 2;
    transition: opacity var(--transition-speed);
}

.hero-logo-wrap:hover .hero-logo-default {
    opacity: 0;
}

.hero-logo-wrap:hover .hero-logo-hover {
    opacity: 1;
}

.glitch-text {
    font-size: clamp(3.5rem, 10vw, 7.5rem);
    font-weight: bold;
    text-transform: uppercase;
    color: var(--color-neon-cyan);
    position: relative;
    letter-spacing: 0.1em;
    animation: glitch-subtle 4s ease-in-out infinite;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.glitch-text .terminal-prompt {
    font-size: 0.35em;
    color: var(--color-neon-purple);
    font-weight: normal;
    margin-right: 0.2em;
    text-transform: none;
    letter-spacing: 0.02em;
}

.glitch-text .terminal-cursor {
    display: inline-block;
    color: var(--color-neon-cyan);
    animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

@keyframes glitch-subtle {
    0%, 90%, 100% {
        transform: translate(0);
        text-shadow: 0 0 var(--color-neon-cyan);
    }
    92% {
        transform: translate(-1px, 1px);
        text-shadow: 1px 1px var(--color-neon-pink), -1px -1px var(--color-neon-purple);
    }
    94% {
        transform: translate(1px, -1px);
        text-shadow: -1px 1px var(--color-neon-pink), 1px -1px var(--color-neon-purple);
    }
    96% {
        transform: translate(-1px, -1px);
        text-shadow: 1px -1px var(--color-neon-pink), -1px 1px var(--color-neon-purple);
    }
    98% {
        transform: translate(1px, 1px);
        text-shadow: -1px -1px var(--color-neon-pink), 1px 1px var(--color-neon-purple);
    }
}

@keyframes glitch-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.95; }
}

@keyframes glitch-effect {
    0% {
        transform: translate(0);
        text-shadow: 2px 2px var(--color-neon-pink), -2px -2px var(--color-neon-purple);
    }
    25% {
        transform: translate(-2px, 2px);
        text-shadow: -2px -2px var(--color-neon-pink), 2px 2px var(--color-neon-purple);
    }
    50% {
        transform: translate(2px, -2px);
        text-shadow: 2px -2px var(--color-neon-pink), -2px 2px var(--color-neon-purple);
    }
    75% {
        transform: translate(-2px, -2px);
        text-shadow: -2px 2px var(--color-neon-pink), 2px -2px var(--color-neon-purple);
    }
    100% {
        transform: translate(0);
        text-shadow: 2px 2px var(--color-neon-pink), -2px -2px var(--color-neon-purple);
    }
}

.subheadline {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--color-text-secondary);
    margin: 2rem 0;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.cta-button {
    padding: 0.9rem 2.4rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    backdrop-filter: blur(6px);
}

.cta-button span {
    position: relative;
    z-index: 1;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-purple));
    border-color: transparent;
    color: var(--color-bg-primary);
    box-shadow: 0 14px 40px rgba(0, 255, 255, 0.35);
}

.cta-button.primary:hover {
    box-shadow: 0 18px 60px rgba(0, 255, 255, 0.5);
    transform: translateY(-1px);
}

.cta-button.secondary {
    background: transparent;
    border-color: var(--color-neon-purple);
    color: var(--color-neon-purple);
}

.cta-button.secondary:hover {
    background: rgba(176, 0, 255, 0.12);
    box-shadow: 0 10px 30px rgba(176, 0, 255, 0.35);
    transform: translateY(-1px);
}

/* ===========================
   Hero Stats Bar
   =========================== */
.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 3.5rem;
    flex-wrap: wrap;
    background: var(--color-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 12px;
    overflow: hidden;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.85rem 2.25rem;
    border-right: 1px solid var(--color-glass-border);
    flex: 1;
    min-width: 100px;
}

.hero-stat:last-child {
    border-right: none;
}

.hero-stat-divider {
    display: none;
}

.hero-stat-value {
    font-size: 1.35rem;
    font-weight: bold;
    color: var(--color-neon-cyan);
    text-shadow: 0 0 12px rgba(0, 255, 255, 0.45);
    font-family: var(--font-primary);
    line-height: 1;
}

.hero-stat-label {
    font-size: 0.65rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.3rem;
    white-space: nowrap;
}

/* ===========================
   Features Grid & Overview
   =========================== */
#overview {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem 1rem 2rem;
}

.overview-container {
    max-width: 1100px;
    margin: 0 auto;
}

.overview-lead {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.overview-block {
    background: var(--color-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-glass-border);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.overview-block h3 {
    font-size: 1.2rem;
    color: var(--color-neon-cyan);
    margin-bottom: 0.75rem;
}

.overview-block p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.overview-block:hover {
    transform: translateY(-4px);
    border-color: var(--color-neon-cyan);
    box-shadow: 0 20px 60px rgba(0, 255, 255, 0.08);
}

.overview-footer {
    max-width: 800px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

#features {
    position: relative;
    z-index: 1;
    padding: 6rem 2rem 5rem 2rem;
}

.features-inner {
    max-width: 900px;
    margin: 0 auto 3rem auto;
    text-align: center;
}

.section-heading {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.features-intro {
    color: var(--color-text-secondary);
    max-width: 720px;
    margin: 0 auto;
    font-size: 0.95rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 14px;
    padding: 2.25rem 2rem 2rem 2rem;
    text-align: center;
    transition: all var(--transition-speed);
    position: relative;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-neon-cyan), var(--color-neon-purple));
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-neon-cyan);
    box-shadow: 0 18px 50px rgba(0, 255, 255, 0.18);
}

.feature-card:hover::before {
    opacity: 1;
}

/* ===========================
   Architecture Section
   =========================== */
#architecture {
    position: relative;
    z-index: 1;
    padding: 5rem 2rem;
}

.architecture-inner {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.arch-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    margin-top: 3rem;
    flex-wrap: wrap;
    gap: 0;
}

.arch-step {
    background: var(--color-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-glass-border);
    border-radius: 14px;
    padding: 2rem 1.5rem;
    flex: 1;
    min-width: 190px;
    max-width: 255px;
    text-align: center;
    transition: all var(--transition-speed);
}

.arch-step:hover {
    border-color: var(--color-neon-cyan);
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 255, 255, 0.1);
}

.arch-step-icon {
    font-size: 2.25rem;
    margin-bottom: 0.4rem;
    filter: drop-shadow(0 0 8px rgba(0, 255, 255, 0.3));
    line-height: 1;
}

.arch-step-num {
    font-size: 0.62rem;
    color: var(--color-neon-purple);
    font-weight: bold;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 0.55rem;
    font-family: var(--font-primary);
}

.arch-step h3 {
    font-size: 0.95rem;
    color: var(--color-neon-cyan);
    margin-bottom: 0.6rem;
    font-family: var(--font-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.arch-step p {
    font-size: 0.84rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
}

.arch-connector {
    display: flex;
    align-items: center;
    align-self: center;
    padding: 0 0.6rem;
    color: var(--color-neon-purple);
    font-size: 1.4rem;
    flex-shrink: 0;
    opacity: 0.5;
    margin-bottom: 2rem;
}

@media (max-width: 960px) {
    .arch-connector {
        display: none;
    }

    .arch-steps {
        gap: 1rem;
    }

    .arch-step {
        min-width: 160px;
    }
}

@media (max-width: 600px) {
    .arch-step {
        max-width: 100%;
        width: 100%;
    }
}

/* ===========================
   Quick Start Section
   =========================== */
#quickstart {
    position: relative;
    z-index: 1;
    padding: 0 2rem 5rem 2rem;
}

.quickstart-inner {
    max-width: 780px;
    margin: 0 auto;
}

.quickstart-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.quickstart-code {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
}

.quickstart-code-header {
    background: var(--color-bg-tertiary);
    padding: 0.7rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-glass-border);
}

.quickstart-code-dots {
    display: flex;
    gap: 0.4rem;
}

.quickstart-code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.quickstart-code-dot.close { background: #ff5f56; }
.quickstart-code-dot.min   { background: #ffbd2e; }
.quickstart-code-dot.max   { background: #27c93f; }

.quickstart-code-label {
    font-size: 0.8rem;
    color: var(--color-neon-cyan);
    font-family: var(--font-primary);
    flex: 1;
}

.quickstart-code-body {
    padding: 1.5rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.quickstart-step-comment {
    color: var(--color-text-secondary);
    font-size: 0.78rem;
    font-family: var(--font-primary);
    opacity: 0.55;
    margin-bottom: 0.15rem;
}

.quickstart-step pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-all;
}

.quickstart-step code {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    color: var(--color-neon-cyan);
}

.quickstart-step .cmd-dollar {
    color: var(--color-neon-purple);
    user-select: none;
}

.quickstart-footer {
    text-align: center;
    margin-top: 1.75rem;
}

.quickstart-footer p {
    color: var(--color-text-secondary);
    font-size: 0.88rem;
}

.quickstart-footer code {
    color: var(--color-neon-cyan);
    font-family: var(--font-primary);
    font-size: 0.85rem;
}

.quickstart-footer a {
    color: var(--color-neon-cyan);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.quickstart-footer a:hover {
    color: var(--color-neon-purple);
}

/* ===========================
   Showcase Section
   =========================== */
#showcase {
    position: relative;
    z-index: 1;
    padding: 5rem 2rem;
}

.showcase-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.showcase-inner .features-intro {
    margin-bottom: 3rem;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2.5rem;
}

.showcase-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-glass-border);
    border-radius: 10px;
    overflow: hidden;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
    margin: 0;
}

.showcase-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 255, 255, 0.35);
    box-shadow: 0 8px 40px rgba(0, 255, 255, 0.12);
}

.showcase-browser-bar {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    background: var(--color-bg-tertiary);
    padding: 0.55rem 1rem;
    border-bottom: 1px solid var(--color-glass-border);
}

.showcase-browser-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.showcase-browser-dot.close { background: #ff5f56; }
.showcase-browser-dot.min   { background: #ffbd2e; }
.showcase-browser-dot.max   { background: #27c93f; }

.showcase-browser-address {
    margin-left: 0.5rem;
    font-family: var(--font-primary);
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.04em;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.showcase-img-wrap {
    overflow: hidden;
    line-height: 0;
}

.showcase-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.4s ease;
}

.showcase-card:hover .showcase-img {
    transform: scale(1.02);
}

.showcase-caption {
    padding: 1.1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.showcase-caption-label {
    font-family: var(--font-primary);
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--color-neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.showcase-caption-desc {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

@media (max-width: 900px) {
    .showcase-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   Features Checklist (under terminal)
   =========================== */
#roadmap {
    position: relative;
    z-index: 1;
    padding: 2rem;
    padding-top: 0;
}

.roadmap-container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--color-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    padding: 1.5rem 2rem;
}

.roadmap-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.roadmap-heading {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.roadmap-view-toggle {
    display: flex;
    gap: 0;
    border: 1px solid var(--color-glass-border);
    border-radius: 6px;
    overflow: hidden;
}

.roadmap-view-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-speed);
}

.roadmap-view-btn.active {
    background: var(--color-neon-cyan);
    color: var(--color-bg-primary);
    font-weight: bold;
}

.roadmap-view-btn:not(.active):hover {
    color: var(--color-neon-cyan);
    background: rgba(0, 255, 255, 0.08);
}

.roadmap-item-desc {
    display: none;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    opacity: 0.7;
    margin-top: 0.2rem;
}

.roadmap-grid.detailed .roadmap-item-desc {
    display: block;
}


.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.roadmap-col h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.75rem;
}

.roadmap-completed h3 { color: #27c93f; }
.roadmap-wip h3 { color: #ffbd2e; }
.roadmap-planned h3 { color: var(--color-neon-cyan); }

.roadmap-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.roadmap-list li {
    position: relative;
    padding: 0.4rem 0 0.4rem 1.5rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.roadmap-list li.done::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #27c93f;
}

.roadmap-list li.wip::before {
    content: '…';
    position: absolute;
    left: 0;
    color: #ffbd2e;
}

.roadmap-list li.planned::before {
    content: '○';
    position: absolute;
    left: 0;
    color: var(--color-neon-cyan);
    font-size: 0.75rem;
}

.roadmap-list .roadmap-batch-header {
    padding-left: 0;
    margin-top: 0.75rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    opacity: 0.5;
}

.roadmap-list .roadmap-batch-header:first-child {
    margin-top: 0;
}

/* ===========================
   Changelog Section
   =========================== */
.changelog-container {
    margin-top: 1.5rem;
}

.changelog-section-heading {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-secondary);
    opacity: 0.6;
    margin-bottom: 1.25rem;
}

/* Latest entry wrapper */
.changelog-latest {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-glass-border);
}

/* Per-entry header row */
.changelog-entry-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.changelog-entry-header--latest .changelog-title {
    color: var(--color-neon-cyan);
    font-size: 0.95rem;
}

/* Collapsible older entries */
.changelog-older {
    margin-bottom: 0.5rem;
}

.changelog-toggle {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.35rem 0;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: color var(--transition-speed);
}

.changelog-toggle:hover {
    color: var(--color-neon-cyan);
}

.changelog-chevron {
    font-size: 0.75rem;
    color: var(--color-neon-cyan);
    flex-shrink: 0;
}

.changelog-title {
    flex: 1;
}

.changelog-meta {
    font-size: 0.75rem;
    opacity: 0.5;
    margin-left: auto;
}

/* Category groups inside an entry */
.changelog-entry {
    padding: 0.5rem 0 0.25rem;
}

.changelog-group {
    margin-bottom: 0.85rem;
}

.changelog-group-label {
    display: inline-block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.1rem 0.5rem;
    border-radius: 2px;
    margin-bottom: 0.4rem;
}

.changelog-group-label[data-category="added"] {
    color: var(--color-neon-cyan);
    border: 1px solid var(--color-neon-cyan);
    opacity: 0.85;
}

.changelog-group-label[data-category="improved"] {
    color: var(--color-neon-purple);
    border: 1px solid var(--color-neon-purple);
    opacity: 0.85;
}

.changelog-group-label[data-category="changed"] {
    color: var(--color-neon-pink);
    border: 1px solid var(--color-neon-pink);
    opacity: 0.85;
}

.changelog-group-label[data-category="upgraded"] {
    color: var(--color-neon-cyan);
    border: 1px solid var(--color-neon-cyan);
    opacity: 0.85;
}

.changelog-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.changelog-item {
    position: relative;
    padding: 0.35rem 0 0.35rem 1.5rem;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.changelog-item::before {
    content: '▹';
    position: absolute;
    left: 0;
    font-size: 0.75rem;
}

.changelog-item--added::before,
.changelog-item--upgraded::before {
    color: var(--color-neon-cyan);
}

.changelog-item--improved::before {
    color: var(--color-neon-purple);
}

.changelog-item--changed::before {
    color: var(--color-neon-pink);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px var(--color-neon-cyan));
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--color-neon-cyan);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ===========================
   Terminal Section
   =========================== */
#terminal-section {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem;
}

.terminal-container {
    max-width: 1200px;
    max-height: 450px;
    margin: 0 auto;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    background: var(--color-bg-tertiary);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-glass-border);
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
    margin-right: 1rem;
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-button.close {
    background: #ff5f56;
}

.terminal-button.minimize {
    background: #ffbd2e;
}

.terminal-button.maximize {
    background: #27c93f;
}

.terminal-title {
    color: var(--color-neon-cyan);
    font-size: 1rem;
    flex: 1;
}

.website-title{
    color: var(--color-neon-cyan);
    font-size: 2.5rem;
    flex: 1;
}

.terminal-usage-indicator {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    opacity: 0.85;
    white-space: nowrap;
}

.terminal-body {
    padding: 1.5rem;
    min-height: 300px;
    max-height: 500px;
    overflow-y: auto;
}

#terminal-output {
    margin-bottom: 1rem;
}

.terminal-line {
    margin-bottom: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.terminal-prompt {
    color: var(--color-neon-purple);
    font-weight: bold;
}

.terminal-text {
    color: var(--color-text-primary);
}

.terminal-response {
    color: var(--color-neon-cyan);
    white-space: pre-wrap;
    word-wrap: break-word;
}

.terminal-input-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    outline: none;
    padding: 0.5rem 0;
}

#terminal-input::placeholder {
    color: var(--color-text-secondary);
}

.vn-char-counter {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
    font-family: var(--font-primary);
}

.vn-char-counter.warn {
    color: var(--color-neon-cyan);
}

.vn-char-counter.limit {
    color: #ff4444;
}

.terminal-disclaimer {
    padding: 0.8rem 1.5rem;
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-glass-border);
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-align: center;
}

.terminal-loading {
    display: inline-block;
    color: var(--color-neon-cyan);
}

.terminal-loading::after {
    content: '...';
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { content: '.'; }
    33% { content: '..'; }
    66% { content: '...'; }
}

/* ===========================
   Visual Novel Dialog
   =========================== */
.vn-container {
    overflow: visible;
}

.vn-body {
    display: flex;
    flex-direction: row;
    min-height: 320px;
    max-height: 320px;
}

.vn-portrait-panel {
    width: 250px;
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.35);
    border-right: 1px solid var(--color-glass-border);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.vn-portrait-nameplate {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    padding: 2rem 0.75rem 0.55rem;
    text-align: center;
    pointer-events: none;
}

.vn-portrait-name-text {
    color: var(--color-neon-cyan);
    font-size: 0.78rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-family: var(--font-primary);
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);
}

.vn-character-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.vn-character-img.changing {
    animation: vn-img-swap 0.35s ease;
}

@keyframes vn-img-swap {
    0%   { opacity: 1; }
    40%  { opacity: 0.3; }
    100% { opacity: 1; }
}

.vn-dialog-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.vn-messages {
    flex: 1;
    padding: 1rem 1.25rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.vn-messages::-webkit-scrollbar { width: 6px; }
.vn-messages::-webkit-scrollbar-track { background: transparent; }
.vn-messages::-webkit-scrollbar-thumb { background: var(--color-neon-cyan); border-radius: 3px; }

.vn-message {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

/* Hidden by default; revealed in mobile chat mode */
.vn-bubble-avatar {
    display: none;
}

.vn-speaker {
    font-size: 0.72rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.vn-message.misaka .vn-speaker { color: var(--color-neon-cyan); }
.vn-message.user   .vn-speaker { color: var(--color-neon-purple); }
.vn-message.system .vn-speaker { display: none; }

.vn-text {
    color: var(--color-text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

.vn-message.user   .vn-text { color: var(--color-text-secondary); }
.vn-message.system .vn-text {
    color: var(--color-text-secondary);
    font-style: italic;
    font-size: 0.82rem;
    text-align: center;
    opacity: 0.7;
}

.vn-input-area {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.7rem 1.25rem;
    border-top: 1px solid var(--color-glass-border);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.vn-you-label {
    color: var(--color-neon-purple);
    font-weight: bold;
    white-space: nowrap;
    font-size: 0.9rem;
    font-family: var(--font-primary);
}

/* Loading dots (thinking indicator) */
.vn-loading-dots {
    display: inline-flex;
    gap: 5px;
    align-items: center;
    padding: 2px 0;
}

.vn-loading-dots span {
    width: 6px;
    height: 6px;
    background: var(--color-neon-cyan);
    border-radius: 50%;
    animation: vn-dot-bounce 1.4s infinite ease-in-out both;
}

.vn-loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.vn-loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes vn-dot-bounce {
    0%, 80%, 100% { transform: scale(0); opacity: 0.4; }
    40%           { transform: scale(1); opacity: 1;   }
}

/* Responsive overrides for VN section — Mobile Chat Mode */
@media (max-width: 600px) {
    /* Terminal container: remove fixed max-height so the chat panel can breathe */
    .terminal-container.vn-container {
        max-height: none;
    }

    /* Chat body: fixed height with scroll */
    .vn-body {
        flex-direction: column;
        min-height: 420px;
        max-height: 420px;
    }

    /* Portrait panel hidden — character appears as inline chat avatar */
    .vn-portrait-panel {
        display: none;
    }

    /* Messages area fills available space */
    .vn-messages {
        flex: 1;
        max-height: none;
        padding: 1rem 0.20rem;
        gap: 0.85rem;
    }

    /* Base chat bubble sizing */
    .vn-message {
        max-width: 95%;
    }

    /* Misaka messages: left-aligned with avatar on the left */
    .vn-message.misaka {
        align-self: flex-start;
        display: grid;
        grid-template-columns: 36px 1fr;
        grid-template-rows: auto auto;
        column-gap: 8px;
        row-gap: 2px;
    }

    /* User messages: right-aligned */
    .vn-message.user {
        align-self: flex-end;
        align-items: flex-end;
    }

    /* System messages: centered */
    .vn-message.system {
        max-width: 100%;
        align-self: center;
    }

    /* Misaka round avatar inside chat bubble */
    .vn-message.misaka .vn-bubble-avatar {
        display: block;
        width: 42px;
        height: 42px;
        border-radius: 50%;
        object-fit: cover;
        object-position: center 5%;
        grid-column: 1;
        grid-row: 1 / 3;
        align-self: end;
        flex-shrink: 0;
        border: 1px solid rgba(0, 255, 255, 0.5);
        box-shadow: 0 0 8px rgba(0, 255, 255, 0.2);
        background: #0a0a0a;
    }

    /* Misaka grid column placement */
    .vn-message.misaka .vn-speaker {
        grid-column: 2;
        grid-row: 1;
        font-size: 0.62rem;
    }

    .vn-message.misaka .vn-text {
        grid-column: 2;
        grid-row: 2;
        display: block;
        background: rgba(0, 255, 255, 0.06);
        border: 1px solid rgba(0, 255, 255, 0.18);
        border-radius: 2px 12px 12px 12px;
        padding: 7px 11px;
        font-size: 0.9rem;
    }

    /* User speaker right-aligned */
    .vn-message.user .vn-speaker {
        font-size: 0.62rem;
        text-align: right;
    }

    /* User message bubble */
    .vn-message.user .vn-text {
        display: block;
        background: rgba(176, 0, 255, 0.08);
        border: 1px solid rgba(176, 0, 255, 0.22);
        border-radius: 12px 2px 12px 12px;
        padding: 7px 11px;
        font-size: 0.9rem;
        color: var(--color-text-primary);
        text-align: left;
    }

    /* Tighter input bar */
    .vn-input-area {
        padding: 0.65rem 0.85rem;
    }

    .vn-you-label {
        font-size: 0.85rem;
    }
}

/* ===========================
   Footer
   =========================== */
#footer {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem 2.5rem 2rem;
    border-top: 1px solid var(--color-glass-border);
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
}

.footer-top {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-shrink: 0;
}

.footer-logo {
    border-radius: 4px;
    filter: drop-shadow(0 0 6px rgba(0, 255, 255, 0.3));
}

.footer-brand-name {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--color-neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-tagline {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    opacity: 0.65;
    margin: 0;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 2rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--color-glass-border);
    margin-bottom: 2rem;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.footer-col-heading {
    font-size: 0.67rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--color-neon-cyan);
    margin-bottom: 0.2rem;
    font-weight: bold;
}

.footer-col a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    opacity: 0.65;
    transition: color var(--transition-speed), opacity var(--transition-speed);
}

.footer-col a:hover {
    color: var(--color-neon-cyan);
    opacity: 1;
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: 0.78rem;
    opacity: 0.45;
    margin: 0;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    #hero {
        min-height: 80vh;
        padding: 1.5rem;
    }

    #overview {
        padding: 3rem 1.5rem 1rem 1.5rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-button {
        width: 100%;
    }

    .hero-stats {
        border-radius: 8px;
    }

    .hero-stat {
        padding: 0.7rem 1.5rem;
    }

    #features {
        padding: 3rem 1.5rem;
    }

    #architecture {
        padding: 3rem 1.5rem;
    }

    #quickstart {
        padding: 0 1.5rem 3rem 1.5rem;
    }

    #roadmap {
        padding: 2rem 1rem 0;
    }

    .roadmap-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    #terminal-section {
        padding: 2rem 1rem;
    }

    .terminal-body {
        padding: 1rem;
        min-height: 250px;
        max-height: 400px;
    }

    .terminal-title {
        font-size: 0.8rem;
    }

    .website-title{
        font-size: 2rem;
    }

    .footer-links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .glitch-text {
        font-size: 2.5rem;
    }

    .hero-stat {
        padding: 0.6rem 1rem;
        min-width: 80px;
    }

    .hero-stat-value {
        font-size: 1.1rem;
    }

    .subheadline {
        font-size: 1rem;
    }

    .terminal-header {
        padding: 0.6rem 0.8rem;
    }

    .terminal-button {
        width: 10px;
        height: 10px;
    }

    .terminal-title {
        font-size: 0.6rem;
    }

    .website-title{
        font-size: 1.2rem;
    }

    .terminal-body {
        padding: 0px;
        max-width: 100%;
        font-size: 0.8rem;
    }

    #terminal-input {
        font-size: 0.8rem;
    }
}

/* ===========================
   Cipher Codex Section
   =========================== */
#cipher-section {
    position: relative;
    z-index: 1;
    padding: 4rem 2rem 5rem 2rem;
}

.cipher-container {
    max-width: 1100px;
    margin: 0 auto;
}

.cipher-section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.cipher-intro {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 720px;
    margin: 0 auto 1.75rem auto;
}

.cipher-transmission-hint {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: var(--color-glass);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 8px;
    padding: 0.75rem 1.25rem;
    margin-top: 0.5rem;
}

.cipher-hint-label {
    font-size: 0.75rem;
    color: var(--color-neon-purple);
    letter-spacing: 0.05em;
}

.cipher-hint-text {
    font-size: 1rem;
    color: var(--color-neon-cyan);
    letter-spacing: 0.08em;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.5);
    font-family: var(--font-primary);
}

.cipher-hint-decode-btn {
    background: transparent;
    border: 1px solid var(--color-neon-purple);
    color: var(--color-neon-purple);
    font-family: var(--font-primary);
    font-size: 0.75rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-speed);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cipher-hint-decode-btn:hover {
    background: rgba(176, 0, 255, 0.15);
    box-shadow: 0 0 12px rgba(176, 0, 255, 0.3);
}

/* Cipher alphabet grid */
.cipher-alphabet {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
    gap: 0.6rem;
    margin-bottom: 3rem;
}

.cipher-card {
    background: var(--color-glass);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    padding: 0.65rem 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    cursor: default;
    transition: all var(--transition-speed);
    user-select: none;
}

.cipher-card:hover {
    border-color: var(--color-neon-cyan);
    background: rgba(0, 255, 255, 0.06);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 255, 255, 0.12);
}

.cipher-symbol {
    font-size: 1.5rem;
    color: var(--color-neon-cyan);
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.5);
    line-height: 1;
    transition: text-shadow var(--transition-speed);
}

.cipher-card:hover .cipher-symbol {
    text-shadow: 0 0 14px rgba(0, 255, 255, 0.9);
}

.cipher-letter {
    font-size: 0.7rem;
    color: var(--color-neon-purple);
    font-weight: bold;
    letter-spacing: 0.05em;
}

@keyframes cipher-flash {
    0%, 100% { text-shadow: 0 0 8px rgba(0, 255, 255, 0.5); color: var(--color-neon-cyan); }
    50% { text-shadow: 0 0 20px rgba(0, 255, 255, 1), 0 0 40px rgba(176, 0, 255, 0.5); color: #ffffff; }
}

.cipher-card.flash .cipher-symbol {
    animation: cipher-flash 0.4s ease-in-out;
}

/* Codec tool */
.cipher-tool {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-glass-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.cipher-tool-header {
    background: var(--color-bg-tertiary);
    padding: 0.8rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-glass-border);
    flex-wrap: wrap;
    gap: 0.75rem;
}

.cipher-tool-title {
    color: var(--color-neon-cyan);
    font-size: 0.9rem;
    letter-spacing: 0.06em;
}

.cipher-mode-toggle {
    display: flex;
    gap: 0;
    border: 1px solid var(--color-glass-border);
    border-radius: 6px;
    overflow: hidden;
}

.cipher-mode-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.8rem;
    padding: 0.4rem 1rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-speed);
}

.cipher-mode-btn.active {
    background: var(--color-neon-cyan);
    color: var(--color-bg-primary);
    font-weight: bold;
}

.cipher-mode-btn:not(.active):hover {
    color: var(--color-neon-cyan);
    background: rgba(0, 255, 255, 0.08);
}

.cipher-io {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    padding: 1.5rem;
    align-items: center;
}

.cipher-panel {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.cipher-panel-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
}

.cipher-textarea {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-glass-border);
    border-radius: 6px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    padding: 0.75rem;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-speed);
    width: 100%;
}

.cipher-textarea:focus {
    border-color: var(--color-neon-cyan);
    box-shadow: 0 0 0 2px rgba(0, 255, 255, 0.1);
}

.cipher-output-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-glass-border);
    border-radius: 6px;
    color: var(--color-neon-cyan);
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.8;
    letter-spacing: 0.06em;
    padding: 0.75rem;
    min-height: 7rem;
    white-space: pre-wrap;
    word-break: break-all;
    text-shadow: 0 0 6px rgba(0, 255, 255, 0.4);
    transition: text-shadow var(--transition-speed);
}

.cipher-output-box:not(:empty) {
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.6);
}

.cipher-io-separator {
    font-size: 1.5rem;
    color: var(--color-neon-purple);
    padding: 0 1.25rem;
    text-align: center;
    opacity: 0.7;
}

.cipher-actions {
    display: flex;
    gap: 0.75rem;
    padding: 0 1.5rem 1.25rem 1.5rem;
    flex-wrap: wrap;
}

.cipher-action-btn {
    background: transparent;
    border: 1px solid var(--color-glass-border);
    color: var(--color-text-secondary);
    font-family: var(--font-primary);
    font-size: 0.8rem;
    padding: 0.45rem 1.1rem;
    border-radius: 999px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--transition-speed);
}

.cipher-action-btn:hover {
    border-color: var(--color-neon-cyan);
    color: var(--color-neon-cyan);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.2);
}

.cipher-action-btn.primary {
    background: linear-gradient(135deg, var(--color-neon-cyan), var(--color-neon-purple));
    border-color: transparent;
    color: var(--color-bg-primary);
    font-weight: bold;
}

.cipher-action-btn.primary:hover {
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
    transform: translateY(-1px);
}

.cipher-feedback {
    font-size: 0.8rem;
    color: var(--color-neon-cyan);
    padding: 0 1.5rem 1rem 1.5rem;
    min-height: 1.4rem;
    letter-spacing: 0.03em;
}

/* Incoming transmission overlay (shared link) */
.transmission-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    animation: overlay-in 0.3s ease;
}

.transmission-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.transmission-line {
    font-size: 1.2rem;
    color: var(--color-neon-cyan);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.8);
    animation: trans-blink 0.6s step-end infinite;
}

.transmission-scan {
    width: 220px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-neon-cyan), transparent);
    margin: 0 auto;
    animation: scan-sweep 1.5s ease-in-out infinite;
}

.transmission-id {
    font-size: 0.75rem;
    color: var(--color-neon-purple);
    letter-spacing: 0.1em;
}

@keyframes overlay-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes trans-blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0.5; }
}

@keyframes scan-sweep {
    0% { transform: translateX(-100px); opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { transform: translateX(100px); opacity: 0; }
}

.transmission-overlay.fade-out {
    animation: overlay-out 0.5s ease forwards;
}

@keyframes overlay-out {
    to { opacity: 0; }
}

/* Cipher section responsive */
@media (max-width: 768px) {
    #cipher-section {
        padding: 3rem 1rem 3rem 1rem;
    }

    .cipher-alphabet {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 0.5rem;
    }

    .cipher-io {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
    }

    .cipher-io-separator {
        transform: rotate(90deg);
        padding: 0.25rem;
    }
}

/* ===========================
   Scrollbar Styling
   =========================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-neon-cyan);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neon-purple);
}