/* ==========================================================================
   GUANNY.XYZ - 3D SHATTER & BREAKTHROUGH DESIGN SYSTEM
   Based on MSI 20 Visual Analysis:
   - Vibrant Red (#FF2A1B)
   - Solid Black (#1A1A1A)
   - Light Ice Grey & White (#FFFFFF ~ #E5E5E5)
   - Shadow Grey (#808080 ~ #4A4A4A)
   ========================================================================== */

:root {
    /* Palette Tokens */
    --color-accent-red: #FF2A1B;
    --color-accent-red-glow: rgba(255, 42, 27, 0.45);
    --color-accent-red-soft: rgba(255, 42, 27, 0.12);
    --color-black: #111111;
    --color-black-pure: #0a0a0c;
    --color-dark-grey: #242426;
    --color-shadow-grey: #686870;
    --color-light-grey: #E5E8EC;
    --color-white: #FFFFFF;
    --color-glass-surface: rgba(255, 255, 255, 0.72);
    --color-glass-border: rgba(17, 17, 17, 0.14);

    /* Fonts */
    --font-display: 'Syne', 'Space Grotesk', -apple-system, sans-serif;
    --font-heading: 'Space Grotesk', -apple-system, sans-serif;
    --font-mono: 'Rajdhani', 'JetBrains Mono', monospace;
    --font-body: 'Inter', -apple-system, sans-serif;

    /* Theme Variables - Default: ICE GLASS (High-key White/Red/Black per report) */
    --bg-base: #F0F2F5;
    --bg-gradient: radial-gradient(circle at 35% 45%, #ffffff 0%, #ebedf2 60%, #dfe3e8 100%);
    --text-primary: #111111;
    --text-secondary: #585860;
    --card-bg: rgba(255, 255, 255, 0.82);
    --hud-border: rgba(17, 17, 17, 0.2);
    --header-bg: rgba(240, 242, 245, 0.75);
    --drawer-bg: rgba(248, 249, 251, 0.94);
    --title-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

/* Dark Obsidian Theme */
body.theme-obsidian {
    --bg-base: #0B0B0E;
    --bg-gradient: radial-gradient(circle at 35% 45%, #181820 0%, #0d0d12 65%, #050507 100%);
    --text-primary: #F4F4F6;
    --text-secondary: #90909E;
    --card-bg: rgba(20, 20, 26, 0.85);
    --hud-border: rgba(255, 255, 255, 0.15);
    --header-bg: rgba(11, 11, 14, 0.75);
    --drawer-bg: rgba(14, 14, 18, 0.96);
    --title-shadow: 0 10px 50px rgba(255, 42, 27, 0.25);
    --color-glass-border: rgba(255, 255, 255, 0.12);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: background-color 0.4s ease, color 0.4s ease;
    user-select: none;
}

/* ==========================================================================
   Background & Atmospheric Overlays
   ========================================================================== */
.bg-atmosphere {
    position: fixed;
    inset: 0;
    background: var(--bg-gradient);
    z-index: 0;
    pointer-events: none;
}

/* Asymmetric Red Splash at Left-Center (MSI Style) */
.bg-red-burst {
    position: absolute;
    width: 65vw;
    height: 65vw;
    max-width: 900px;
    max-height: 900px;
    left: 10%;
    top: 42%;
    transform: translate(-30%, -50%);
    background: radial-gradient(
        circle,
        rgba(255, 42, 27, 0.38) 0%,
        rgba(255, 42, 27, 0.18) 35%,
        rgba(255, 42, 27, 0.05) 60%,
        transparent 80%
    );
    filter: blur(40px);
    mix-blend-mode: multiply;
    animation: burstPulse 6s ease-in-out infinite alternate;
    pointer-events: none;
}

body.theme-obsidian .bg-red-burst {
    mix-blend-mode: screen;
    background: radial-gradient(
        circle,
        rgba(255, 42, 27, 0.55) 0%,
        rgba(255, 42, 27, 0.25) 40%,
        rgba(255, 42, 27, 0.08) 65%,
        transparent 85%
    );
}

@keyframes burstPulse {
    0% { transform: translate(-30%, -50%) scale(0.95); opacity: 0.85; }
    100% { transform: translate(-30%, -50%) scale(1.08); opacity: 1.0; }
}

/* Grunge Crack SVG Overlay */
.grunge-overlay {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.55;
    mix-blend-mode: overlay;
}

body.theme-obsidian .grunge-overlay {
    opacity: 0.35;
    mix-blend-mode: screen;
}

/* WebGL Canvas */
#webgl-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    cursor: grab;
}

#webgl-canvas:active {
    cursor: grabbing;
}

/* ==========================================================================
   Header & Navigation Bar
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 10;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-glass-border);
    transition: background 0.3s ease;
}

.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-crest {
    position: relative;
    width: 38px;
    height: 38px;
    background: var(--text-primary);
    clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--bg-base);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), background 0.3s;
}

.brand-wrapper:hover .brand-crest {
    transform: rotate(-6deg) scale(1.08);
    background: var(--color-accent-red);
    color: #FFFFFF;
}

.brand-title {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-red);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-accent-red);
    animation: blinkDot 1.8s ease-in-out infinite;
}

@keyframes blinkDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(0.7); }
}

/* Header Center HUD Info */
.header-hud {
    display: flex;
    align-items: center;
    gap: 24px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.hud-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.hud-tag {
    color: var(--color-accent-red);
    font-weight: 700;
}

/* Header Controls Right */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    width: 42px;
    height: 42px;
    background: transparent;
    border: 1px solid var(--color-glass-border);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.icon-btn:hover {
    border-color: var(--color-accent-red);
    color: var(--color-accent-red);
    background: var(--color-accent-red-soft);
    transform: translateY(-2px);
}

.icon-btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    transition: transform 0.2s;
}

/* Menu Trigger Button */
.menu-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 20px;
    height: 42px;
    background: var(--text-primary);
    color: var(--bg-base);
    border: none;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.15em;
    cursor: pointer;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.menu-btn:hover {
    background: var(--color-accent-red);
    color: #FFFFFF;
    box-shadow: 0 4px 20px var(--color-accent-red-glow);
    transform: translateY(-2px);
}

.hamburger-icon {
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 16px;
}

.hamburger-line {
    height: 2px;
    width: 100%;
    background: currentColor;
    transition: transform 0.25s;
}

/* ==========================================================================
   Hero Cover Main Stage
   ========================================================================== */
.hero-cover {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 5;
    pointer-events: none; /* Let canvas capture mouse, except buttons */
}

/* HUD Industrial Frame Corners */
.hud-frame-corner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 2px solid var(--hud-border);
    pointer-events: none;
}

.hud-tl { top: 90px; left: 40px; border-right: none; border-bottom: none; }
.hud-tr { top: 90px; right: 40px; border-left: none; border-bottom: none; }
.hud-bl { bottom: 40px; left: 40px; border-right: none; border-top: none; }
.hud-br { bottom: 40px; right: 40px; border-left: none; border-top: none; }

.hud-data-label {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    pointer-events: none;
}

.hud-data-left {
    left: 48px;
    top: 50%;
    transform: rotate(-90deg) translateX(-50%);
    transform-origin: left top;
}

.hud-data-right {
    right: 48px;
    top: 50%;
    transform: rotate(90deg) translateX(50%);
    transform-origin: right top;
}

/* Central Typography Container */
.hero-typography-box {
    text-align: center;
    position: relative;
    pointer-events: auto;
    margin-top: -30px;
}

/* Super Bold Heavy MSI-Style Typography */
.main-title {
    font-family: var(--font-display);
    font-size: clamp(4.8rem, 15vw, 13rem);
    font-weight: 900;
    line-height: 0.88;
    letter-spacing: -0.04em;
    color: var(--text-primary);
    text-transform: uppercase;
    position: relative;
    display: inline-block;
    filter: drop-shadow(var(--title-shadow));
    transition: transform 0.25s ease;
}

.main-title:hover {
    transform: scale(1.02);
}

/* Highlight letter accent */
.main-title .char-accent {
    color: var(--color-accent-red);
    display: inline-block;
    position: relative;
}

.main-title .char-accent::after {
    content: '';
    position: absolute;
    bottom: 12%;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--color-accent-red);
    opacity: 0.6;
}

/* Sub-Headline & Coordinates */
.hero-meta-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 18px;
    font-family: var(--font-mono);
    font-size: 1rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.hero-meta-row .accent-sep {
    color: var(--color-accent-red);
    font-weight: 700;
}

/* ==========================================================================
   Tactile Cyberpunk / Esports [ENTER] Button
   ========================================================================== */
.hero-cta {
    margin-top: 45px;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.enter-btn {
    position: relative;
    background: transparent;
    color: var(--text-primary);
    border: none;
    cursor: pointer;
    padding: 2px;
    outline: none;
    text-decoration: none;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-btn-inner {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 44px;
    background: var(--card-bg);
    border: 2px solid var(--text-primary);
    clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: 0.25em;
    color: var(--text-primary);
    backdrop-filter: blur(8px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Angled corner accents */
.enter-btn-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 14px;
    height: 14px;
    background: var(--color-accent-red);
}

.enter-btn-inner::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 14px;
    height: 14px;
    background: var(--color-accent-red);
}

/* Enter button hover */
.enter-btn:hover {
    transform: translateY(-4px) scale(1.03);
}

.enter-btn:hover .enter-btn-inner {
    background: var(--text-primary);
    color: var(--bg-base);
    border-color: var(--color-accent-red);
    box-shadow: 0 10px 35px var(--color-accent-red-glow),
                0 0 0 2px var(--color-accent-red);
}

.enter-btn:active {
    transform: translateY(-1px) scale(0.98);
}

.enter-arrow {
    display: inline-block;
    transition: transform 0.25s ease;
    color: var(--color-accent-red);
}

.enter-btn:hover .enter-arrow {
    transform: translateX(6px);
    color: #FFFFFF;
}

.enter-hint {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ==========================================================================
   Slide-in Navigation Drawer (Menu)
   ========================================================================== */
.menu-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 480px;
    height: 100%;
    background: var(--drawer-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 2px solid var(--text-primary);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 40px;
    transform: translateX(105%);
    transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.25);
}

.menu-drawer.active {
    transform: translateX(0);
}

/* Drawer Backdrop */
.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.drawer-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-glass-border);
}

.drawer-title {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
}

.close-btn {
    width: 42px;
    height: 42px;
    background: transparent;
    border: 1px solid var(--color-glass-border);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
    transition: all 0.2s;
}

.close-btn:hover {
    background: var(--color-accent-red);
    color: #FFFFFF;
    border-color: var(--color-accent-red);
}

/* Drawer Navigation Links */
.drawer-nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 40px 0;
}

.drawer-nav-item {
    position: relative;
}

.drawer-nav-link {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 14px 18px;
    background: transparent;
    color: var(--text-primary);
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    border-left: 3px solid transparent;
    transition: all 0.25s ease;
    cursor: pointer;
}

.drawer-nav-link .nav-num {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-accent-red);
    margin-right: 14px;
}

.drawer-nav-link .nav-stub-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    border: 1px solid var(--color-glass-border);
    padding: 2px 8px;
    border-radius: 2px;
}

.drawer-nav-link:hover {
    background: var(--color-accent-red-soft);
    border-left-color: var(--color-accent-red);
    transform: translateX(8px);
    color: var(--color-accent-red);
}

.drawer-nav-link:hover .nav-stub-tag {
    border-color: var(--color-accent-red);
    color: var(--color-accent-red);
}

/* Drawer Footer */
.drawer-footer {
    padding-top: 24px;
    border-top: 1px solid var(--color-glass-border);
}

.drawer-socials {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.social-link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.social-link:hover {
    color: var(--color-accent-red);
}

.drawer-copy {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
}

/* ==========================================================================
   Enter Transition Modal (When [ENTER] clicked)
   ========================================================================== */
.enter-modal {
    position: fixed;
    inset: 0;
    z-index: 150;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(10, 10, 14, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.enter-modal.active {
    opacity: 1;
    pointer-events: auto;
}

.enter-card {
    position: relative;
    max-width: 520px;
    width: 90%;
    padding: 44px 36px;
    background: var(--drawer-bg);
    border: 2px solid var(--color-accent-red);
    box-shadow: 0 15px 60px var(--color-accent-red-glow);
    clip-path: polygon(16px 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%, 0 16px);
    text-align: center;
    transform: scale(0.92);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.enter-modal.active .enter-card {
    transform: scale(1);
}

.enter-card-status {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-accent-red);
    margin-bottom: 12px;
}

.enter-card-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.enter-card-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.enter-return-btn {
    padding: 14px 32px;
    background: var(--text-primary);
    color: var(--bg-base);
    border: none;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.2em;
    cursor: pointer;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    transition: all 0.2s;
}

.enter-return-btn:hover {
    background: var(--color-accent-red);
    color: #FFFFFF;
}

/* ==========================================================================
   HUD Toast Notification System
   ========================================================================== */
.hud-toast-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 200;
    pointer-events: none;
}

.hud-toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--text-primary);
    color: var(--bg-base);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    border-left: 4px solid var(--color-accent-red);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    transform: translateX(120%);
    animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastSlideIn {
    to { transform: translateX(0); }
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */
@media (max-width: 900px) {
    .site-header {
        padding: 0 20px;
        height: 64px;
    }

    .header-hud {
        display: none;
    }

    .hud-frame-corner,
    .hud-data-label {
        display: none;
    }

    .menu-drawer {
        max-width: 100%;
        padding: 30px 20px;
    }
}

@media (max-width: 600px) {
    .main-title {
        font-size: 4rem;
    }

    .hero-meta-row {
        font-size: 0.8rem;
        letter-spacing: 0.15em;
    }

    .enter-btn-inner {
        padding: 12px 30px;
        font-size: 1.1rem;
    }
}