@import url('variables.css');
@import url('components/sidebar.css');
@import url('components/callouts.css');
@import url('components/code-blocks.css');

/* ==================== RESET & BASE ==================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-family-sans);
    background-color: var(--p4-bg-primary);
    color: var(--p4-text-primary);
    line-height: 1.7;
    font-size: var(--font-size-base);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow: hidden;
    height: 100vh;
    position: relative;
}

/* Animated holographic background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
    animation: holographicBg 20s ease infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes holographicBg {
    0%, 100% {
        background-position: 0% 0%, 100% 100%, 50% 50%;
    }
    33% {
        background-position: 100% 0%, 0% 100%, 25% 75%;
    }
    66% {
        background-position: 50% 100%, 50% 0%, 75% 25%;
    }
}

/* Particle field */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(1px 1px at 20% 30%, rgba(168, 85, 247, 0.4), transparent),
        radial-gradient(1px 1px at 40% 70%, rgba(236, 72, 153, 0.3), transparent),
        radial-gradient(1px 1px at 50% 50%, rgba(6, 182, 212, 0.3), transparent),
        radial-gradient(1px 1px at 70% 20%, rgba(168, 85, 247, 0.3), transparent),
        radial-gradient(1px 1px at 90% 80%, rgba(236, 72, 153, 0.4), transparent),
        radial-gradient(1px 1px at 10% 90%, rgba(6, 182, 212, 0.3), transparent),
        radial-gradient(1px 1px at 80% 40%, rgba(168, 85, 247, 0.3), transparent),
        radial-gradient(1px 1px at 30% 60%, rgba(236, 72, 153, 0.3), transparent);
    background-size: 200px 200px;
    animation: particleFloat 30s linear infinite;
    pointer-events: none;
    z-index: 0;
    opacity: 0.6;
}

@keyframes particleFloat {
    0% { transform: translateY(0) translateX(0); }
    100% { transform: translateY(-200px) translateX(100px); }
}

/* ==================== APP LAYOUT ==================== */

.app-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    height: 100vh;
    width: 100vw;
    position: relative;
    z-index: 1;
}

/* ==================== SIDEBAR ==================== */

.sidebar {
    background: var(--p4-bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--p4-border);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    border-bottom: 1px solid var(--p4-border);
    background: linear-gradient(180deg, rgba(168, 85, 247, 0.1), transparent);
}

.phase-badge {
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

@keyframes holographicShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.app-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--p4-text-primary);
}

/* ==================== PHASE SWITCHER - HOLOGRAPHIC ORBS ==================== */

.phase-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px var(--space-lg);
    border-bottom: 1px solid var(--p4-border);
    background: linear-gradient(90deg,
        rgba(168, 85, 247, 0.05),
        rgba(236, 72, 153, 0.05),
        rgba(6, 182, 212, 0.05)
    );
}

.phase-home {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s;
    background: var(--p4-bg-secondary);
    border: 1px solid var(--p4-border);
}

.phase-home:hover {
    border-color: var(--p4-purple);
    box-shadow: 0 0 20px var(--p4-purple-glow);
    transform: scale(1.1);
}

.phase-dot {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s;
    background: var(--p4-bg-secondary);
    border: 2px solid var(--p4-border);
}

.phase-dot[data-phase="1"] { --dot-color: #00d4ff; --dot-glow: rgba(0, 212, 255, 0.4); }
.phase-dot[data-phase="2"] { --dot-color: #00ffaa; --dot-glow: rgba(0, 255, 170, 0.4); }
.phase-dot[data-phase="3"] { --dot-color: #f59e0b; --dot-glow: rgba(245, 158, 11, 0.4); }
.phase-dot[data-phase="4"] { --dot-color: #a855f7; --dot-glow: rgba(168, 85, 247, 0.4); }

.phase-dot:hover {
    border-color: var(--dot-color);
    box-shadow: 0 0 25px var(--dot-glow);
    transform: scale(1.1);
}

.phase-dot.active {
    border-color: transparent;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
    box-shadow: var(--shadow-holographic);
}

.phase-dot.active .phase-number { color: white; }

.phase-dot.completed::after {
    content: '✓';
    position: absolute;
    top: -4px;
    right: -4px;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    color: white;
    font-size: 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px var(--p4-purple-glow);
}

.phase-number {
    font-weight: 700;
    font-size: 1rem;
    color: var(--dot-color);
    line-height: 1;
}

.phase-progress {
    font-size: 0.55rem;
    color: var(--p4-text-secondary);
    margin-top: 2px;
}

.phase-dot.active .phase-progress { color: rgba(255, 255, 255, 0.8); }

.back-to-roadmap {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    color: var(--p4-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--p4-border);
    transition: all 0.3s;
}

.back-to-roadmap:hover {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.1), transparent);
    color: var(--p4-purple);
}

.search-trigger {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-md) var(--space-lg);
    padding: 10px 14px;
    background: var(--p4-bg-secondary);
    border: 1px solid var(--p4-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--p4-text-secondary);
}

.search-trigger:hover {
    border-color: var(--p4-purple);
    box-shadow: 0 0 20px var(--p4-purple-glow);
}

.search-trigger-text { flex: 1; text-align: left; }

.search-trigger-kbd {
    background: var(--p4-bg-primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
    border: 1px solid var(--p4-border);
}

/* Library Button */
.library-trigger {
    margin-top: 0;
}

.library-count {
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 600;
    color: white;
    box-shadow: 0 0 12px var(--p4-purple-glow);
    font-family: var(--font-family-mono);
}

.progress-container { padding: 0 var(--space-lg); margin-bottom: var(--space-md); }

.progress-bar {
    height: 6px;
    background: var(--p4-border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 100%;
    animation: holographicShift 3s ease infinite;
    border-radius: 3px;
    transition: width 0.5s ease;
    width: 0%;
    box-shadow: 0 0 10px var(--p4-purple-glow);
}

.progress-text {
    display: block;
    font-size: 0.75rem;
    color: var(--p4-text-secondary);
    margin-top: 6px;
    text-align: right;
}

.sidebar-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--p4-border);
    margin-top: auto;
}

.footer-info {
    font-size: 0.8rem;
    color: var(--p4-text-secondary);
    margin-bottom: var(--space-md);
}

.theme-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: none;
    border: 1px solid var(--p4-border);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--p4-text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    transition: all 0.3s;
    width: 100%;
}

.theme-btn:hover {
    border-color: var(--p4-purple);
    color: var(--p4-purple);
    box-shadow: 0 0 15px var(--p4-purple-glow);
}

/* ==================== MAIN CONTENT ==================== */

.main-content {
    overflow-y: auto;
    padding: var(--space-xl) var(--space-xxl);
    position: relative;
    scroll-behavior: smooth;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 50px 120px;
    background: var(--p4-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--p4-border);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

/* Iridescent border on content wrapper */
.content-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan), var(--p4-purple));
    background-size: 400% 400%;
    animation: holographicShift 8s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.loading-state { text-align: center; padding: 60px 20px; color: var(--p4-text-secondary); }

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--p4-border);
    border-top-color: var(--p4-purple);
    border-right-color: var(--p4-pink);
    border-bottom-color: var(--p4-cyan);
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 1s linear infinite;
}

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

/* ==================== TYPOGRAPHY ==================== */

h1, h2, h3, h4 {
    color: var(--p4-text-primary);
    margin-bottom: var(--space-md);
    margin-top: var(--space-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan), var(--p4-purple));
    background-size: 300% 300%;
    animation: holographicShift 5s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 0;
    text-shadow: none;
}

h2 {
    font-size: 1.75rem;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    margin-top: 50px;
}

h3 {
    font-size: 1.25rem;
    margin-top: 30px;
    color: var(--p4-cyan);
}

p { margin-bottom: var(--space-md); }
ul, ol { margin-bottom: var(--space-md); padding-left: var(--space-lg); }
li { margin-bottom: var(--space-sm); }

a {
    color: var(--p4-purple);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

a:hover {
    color: var(--p4-pink);
    text-shadow: 0 0 15px var(--p4-pink-glow);
}

kbd {
    display: inline-block;
    padding: 3px 8px;
    font-family: var(--font-family-mono);
    font-size: 0.85em;
    background: var(--p4-bg-secondary);
    border: 1px solid var(--p4-border);
    border-radius: 4px;
    box-shadow: 0 2px 0 var(--p4-border);
}

/* ==================== SECTION TOC ==================== */

.section-toc {
    background: linear-gradient(135deg,
        rgba(168, 85, 247, 0.08),
        rgba(236, 72, 153, 0.05),
        rgba(6, 182, 212, 0.08)
    );
    border: 1px solid var(--p4-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-xl);
}

.toc-header {
    font-weight: 600;
    font-size: 0.85rem;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toc-links { display: flex; flex-wrap: wrap; gap: var(--space-sm); }

.toc-link {
    display: inline-block;
    padding: 6px 12px;
    background: var(--p4-bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--p4-text-secondary);
    border: 1px solid var(--p4-border);
    transition: all 0.3s;
}

.toc-link:hover {
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    color: white;
    border-color: transparent;
    text-decoration: none;
    box-shadow: 0 0 20px var(--p4-purple-glow);
}

/* ==================== NAVIGATION FOOTER ==================== */

.nav-footer {
    display: flex;
    justify-content: space-between;
    gap: var(--space-md);
    margin-top: 60px;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--p4-border);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--p4-bg-secondary);
    border: 1px solid var(--p4-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    max-width: 45%;
    font-family: inherit;
    position: relative;
    overflow: hidden;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    opacity: 0;
    transition: opacity 0.3s;
}

.nav-btn:hover::before {
    opacity: 0.1;
}

.nav-btn:hover {
    border-color: var(--p4-purple);
    box-shadow: var(--shadow-holographic);
    transform: translateY(-2px);
}

.nav-btn-arrow {
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}
.nav-btn-text { display: flex; flex-direction: column; text-align: left; position: relative; z-index: 1; }
.nav-btn-next .nav-btn-text { text-align: right; }
.nav-btn-label { font-size: 0.75rem; color: var(--p4-text-muted); text-transform: uppercase; }
.nav-btn-title { font-weight: 600; color: var(--p4-text-primary); font-size: 0.95rem; }

/* ==================== CODE WRAPPER ==================== */

.code-wrapper { position: relative; margin: var(--space-lg) 0; }

.copy-btn {
    position: absolute;
    top: 40px;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--p4-bg-secondary);
    border: 1px solid var(--p4-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--p4-text-secondary);
    transition: all 0.3s;
    z-index: 10;
}

.copy-btn:hover {
    border-color: var(--p4-purple);
    color: var(--p4-purple);
    box-shadow: 0 0 15px var(--p4-purple-glow);
}
.copy-btn.copied {
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    color: white;
    border-color: transparent;
}

/* ==================== VISUAL PLACEHOLDER ==================== */

.visual-placeholder {
    border: 2px dashed var(--p4-border);
    background: linear-gradient(135deg,
        rgba(168, 85, 247, 0.05),
        rgba(236, 72, 153, 0.03),
        rgba(6, 182, 212, 0.05)
    );
    border-radius: var(--radius-md);
    padding: 50px 40px;
    text-align: center;
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all 0.3s;
}

.visual-placeholder:hover {
    border-color: var(--p4-purple);
    box-shadow: var(--shadow-holographic);
}
.visual-placeholder .icon { font-size: 48px; opacity: 0.6; }
.visual-placeholder .desc {
    font-weight: 600;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.1rem;
}
.visual-placeholder .specs { font-size: 0.85em; color: var(--p4-text-secondary); font-family: var(--font-family-mono); }

/* ==================== BUTTONS ==================== */

.button {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
    color: white !important;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-holographic);
    transition: all 0.3s;
    text-decoration: none !important;
    font-weight: 600;
}

.button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 0 30px var(--p4-purple-glow),
        0 0 60px var(--p4-pink-glow),
        0 0 90px var(--p4-cyan-glow);
}

/* ==================== BACK TO TOP ==================== */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    box-shadow: 0 0 20px var(--p4-purple-glow);
    z-index: 500;
}

.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-holographic);
}

/* ==================== TOAST ==================== */

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    color: white;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 500;
    box-shadow: var(--shadow-holographic);
    z-index: 1000;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.visible { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ==================== SEARCH MODAL ==================== */

.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 16, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    padding-top: 100px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s;
}

.search-modal.visible { opacity: 1; visibility: visible; }

.search-container {
    width: 560px;
    max-width: 90%;
    background: var(--p4-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--p4-border);
    box-shadow: var(--shadow-holographic);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: 60vh;
    transform: translateY(-20px);
    transition: transform 0.2s;
}

.search-modal.visible .search-container { transform: translateY(0); }

.search-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--p4-border);
    background: linear-gradient(90deg,
        rgba(168, 85, 247, 0.1),
        rgba(236, 72, 153, 0.05),
        rgba(6, 182, 212, 0.1)
    );
}

.search-icon {
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-header input {
    flex: 1;
    padding: 10px;
    font-size: 1rem;
    border: none;
    background: transparent;
    color: var(--p4-text-primary);
    outline: none;
    font-family: inherit;
}

.search-hint { font-size: 0.75rem; padding: 4px 8px; color: var(--p4-text-muted); }
.search-results { overflow-y: auto; flex: 1; }
.search-empty { padding: var(--space-lg); text-align: center; color: var(--p4-text-secondary); }

.search-item {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--p4-border);
    cursor: pointer;
    transition: all 0.3s;
}

.search-item:hover {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.1), transparent);
}
.search-item-title {
    font-weight: 600;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}
.search-item-snippet { font-size: 0.9rem; color: var(--p4-text-secondary); }

/* ==================== ONBOARDING ==================== */

.onboarding-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 16, 0.95);
    backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.onboarding-overlay.visible { opacity: 1; }

.onboarding-modal {
    background: var(--p4-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--p4-border);
    padding: 40px;
    max-width: 480px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-holographic);
    transform: scale(0.9);
    transition: transform 0.3s;
    position: relative;
    overflow: hidden;
}

.onboarding-modal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    padding: 1px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan), var(--p4-purple));
    background-size: 400% 400%;
    animation: holographicShift 6s ease infinite;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.onboarding-overlay.visible .onboarding-modal { transform: scale(1); }

.onboarding-logo { width: 80px; height: auto; margin-bottom: var(--space-md); }

.onboarding-header h2 {
    margin: 0;
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.onboarding-content { margin: var(--space-xl) 0; text-align: left; }
.onboarding-content > p { text-align: center; color: var(--p4-text-secondary); }
.onboarding-tips { margin-top: var(--space-lg); }

.onboarding-tip {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--p4-bg-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    border: 1px solid var(--p4-border);
}

.onboarding-tip .tip-icon { font-size: 1.5rem; }
.onboarding-tip strong {
    display: block;
    margin-bottom: 4px;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.onboarding-tip p { margin: 0; font-size: 0.9rem; color: var(--p4-text-secondary); }

.onboarding-btn {
    display: inline-block;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--p4-purple), var(--p4-pink), var(--p4-cyan));
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

.onboarding-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: var(--shadow-holographic);
}

/* ==================== MOBILE ==================== */

.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--p4-bg-glass);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--p4-border);
    z-index: 200;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
}

.mobile-menu-btn {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
}
.mobile-title {
    font-weight: 600;
    font-size: 1rem;
    background: linear-gradient(90deg, var(--p4-purple), var(--p4-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.search-btn {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--p4-purple);
}

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 16, 0.8);
    z-index: 90;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.mobile-overlay.visible { opacity: 1; visibility: visible; }

.fade-in { animation: fadeIn 0.3s ease-in-out; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== RESPONSIVE ==================== */

@media (max-width: 768px) {
    .app-container { grid-template-columns: 1fr; }
    .mobile-header { display: flex; }
    .main-content { padding: 80px var(--space-md) var(--space-md); }
    .content-wrapper { padding: 24px; border-radius: var(--radius-md); }
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 300px;
        height: 100%;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .sidebar.mobile-open { transform: translateX(0); }
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.4rem; }
    .nav-footer { flex-direction: column; }
    .nav-btn { max-width: 100%; }

    /* Disable particle field on mobile */
    body::after { display: none; }
}

/* ==================== REDUCED MOTION ==================== */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}