/* ============================================
   SATOSHIS GRID - Tron Legacy Style Theme
   ============================================ */

/* CSS Variables */
:root {
    /* Core Colors */
    --void-black: #000000;
    --deep-black: #0a0a0a;
    --grid-dark: #0d1117;

    /* Accent Colors */
    --electric-cyan: #00ffff;
    --electric-cyan-dim: #00888888;
    --electric-cyan-glow: rgba(0, 255, 255, 0.3);

    --core-orange: #f7931a;
    --core-orange-dim: #f7931a88;
    --core-orange-glow: rgba(247, 147, 26, 0.3);

    --alert-red: #ff0000;
    --alert-red-glow: rgba(255, 0, 0, 0.3);

    --pure-white: #ffffff;
    --text-dim: #666666;

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    /* Spacing */
    --hud-padding: 24px;
    --hud-padding-mobile: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

/* Base */
html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--void-black);
    font-family: var(--font-mono);
    color: var(--pure-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   SPLASH SCREEN
   ============================================ */

.splash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--void-black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.splash.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.splash-content {
    text-align: center;
    z-index: 2;
}

.splash-logo {
    margin-bottom: 24px;
}

.logo-symbol {
    font-size: 72px;
    color: var(--core-orange);
    display: block;
    margin-bottom: 16px;
    text-shadow: 0 0 30px var(--core-orange-glow);
    animation: pulse-glow 2s ease-in-out infinite;
}

.logo-text {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 8px;
    color: var(--electric-cyan);
    text-shadow: 0 0 20px var(--electric-cyan-glow);
}

.splash-tagline {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--text-dim);
    margin-bottom: 48px;
}

.enter-button {
    background: transparent;
    border: 2px solid var(--electric-cyan);
    color: var(--electric-cyan);
    padding: 16px 48px;
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 4px;
    cursor: pointer;
    transition: all var(--transition-medium);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
}

.enter-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--electric-cyan-glow), transparent);
    transition: left 0.5s ease;
}

.enter-button:hover {
    background: var(--electric-cyan);
    color: var(--void-black);
    box-shadow: 0 0 30px var(--electric-cyan-glow);
}

.enter-button:hover::before {
    left: 100%;
}

.btn-icon {
    font-size: 12px;
}

.splash-hint {
    margin-top: 24px;
    font-size: 11px;
    color: var(--text-dim);
    letter-spacing: 2px;
}

/* Animated Grid Background */
.splash-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--electric-cyan-dim) 1px, transparent 1px),
        linear-gradient(90deg, var(--electric-cyan-dim) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.1;
    animation: grid-scroll 20s linear infinite;
}

@keyframes grid-scroll {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   CANVAS CONTAINER
   ============================================ */

#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#canvas-container canvas {
    display: block;
}

/* ============================================
   HUD (Heads-Up Display)
   ============================================ */

.hud {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    transition: opacity var(--transition-medium);
}

.hud.hidden {
    opacity: 0;
}

.hud-corner {
    position: absolute;
    pointer-events: auto;
}

.hud-top-left {
    top: var(--hud-padding);
    left: var(--hud-padding);
}

.hud-top-right {
    top: var(--hud-padding);
    right: var(--hud-padding);
    text-align: right;
}

.hud-bottom-left {
    bottom: var(--hud-padding);
    left: var(--hud-padding);
}

.hud-bottom-right {
    bottom: var(--hud-padding);
    right: var(--hud-padding);
    text-align: right;
}

.hud-item {
    margin-bottom: 8px;
}

.hud-label {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--text-dim);
    display: block;
    margin-bottom: 2px;
}

.hud-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--electric-cyan);
    text-shadow: 0 0 10px var(--electric-cyan-glow);
}

/* Logo in HUD */
.hud-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.hud-logo:hover {
    opacity: 1;
}

.logo-symbol-small {
    font-size: 24px;
    color: var(--core-orange);
}

.logo-text-small {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--electric-cyan);
}

/* Audio Toggle */
.audio-toggle {
    position: fixed;
    bottom: var(--hud-padding);
    left: 50%;
    transform: translateX(-50%);
    background: transparent;
    border: 1px solid var(--text-dim);
    color: var(--text-dim);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    pointer-events: auto;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.audio-toggle:hover {
    border-color: var(--electric-cyan);
    color: var(--electric-cyan);
}

.audio-toggle.muted .audio-icon::after {
    content: '🔇';
}

.audio-icon {
    font-size: 18px;
}

/* ============================================
   TRANSACTION INFO PANEL
   ============================================ */

.tx-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(10, 10, 10, 0.95);
    border: 1px solid var(--electric-cyan);
    padding: 24px;
    min-width: 320px;
    z-index: 200;
    box-shadow: 0 0 30px var(--electric-cyan-glow);
    transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.tx-panel.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.tx-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--text-dim);
}

.tx-panel-title {
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--electric-cyan);
}

.tx-panel-close {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 24px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.tx-panel-close:hover {
    color: var(--pure-white);
}

.tx-item {
    margin-bottom: 16px;
}

.tx-label {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--text-dim);
    display: block;
    margin-bottom: 4px;
}

.tx-value {
    font-size: 14px;
    color: var(--pure-white);
}

.tx-hash {
    font-size: 11px;
    word-break: break-all;
    color: var(--electric-cyan);
}

/* ============================================
   SIDE MENU
   ============================================ */

.side-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background: rgba(10, 10, 10, 0.98);
    border-right: 1px solid var(--electric-cyan);
    z-index: 300;
    transform: translateX(-100%);
    transition: transform var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.side-menu:not(.hidden) {
    transform: translateX(0);
}

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

.menu-title {
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--electric-cyan);
}

.menu-close {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 24px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.menu-close:hover {
    color: var(--pure-white);
}

.menu-content {
    flex: 1;
    padding: 24px;
}

.menu-item {
    display: block;
    padding: 16px 0;
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--text-dim);
    text-decoration: none;
    border-bottom: 1px solid rgba(102, 102, 102, 0.2);
    transition: color var(--transition-fast);
}

.menu-item:hover {
    color: var(--electric-cyan);
}

.menu-footer {
    padding: 24px;
    border-top: 1px solid var(--text-dim);
}

.menu-quote {
    font-size: 11px;
    font-style: italic;
    color: var(--text-dim);
    line-height: 1.6;
}

.menu-credits {
    font-size: 9px;
    color: var(--text-dim);
    line-height: 1.5;
    margin-top: 16px;
    opacity: 0.7;
}

.menu-credits a {
    color: var(--text-dim);
    text-decoration: underline;
}

.menu-credits a:hover {
    color: var(--primary);
}

/* ============================================
   FLASH OVERLAY
   ============================================ */

.flash-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--pure-white);
    opacity: 0;
    pointer-events: none;
    z-index: 500;
    transition: opacity 0.1s ease;
}

.flash-overlay.active {
    opacity: 1;
    animation: flash-fade 0.5s ease-out forwards;
}

@keyframes flash-fade {
    0% { opacity: 1; }
    100% { opacity: 0; }
}

/* ============================================
   WHALE ALERT INDICATOR
   ============================================ */

.whale-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 14px;
    letter-spacing: 4px;
    color: var(--core-orange);
    text-shadow: 0 0 20px var(--core-orange-glow);
    opacity: 0;
    pointer-events: none;
    z-index: 150;
    animation: whale-pulse 2s ease-out;
}

@keyframes whale-pulse {
    0% { opacity: 0; transform: translate(-50%, -50%) scale(0.8); }
    20% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); }
    100% { opacity: 0; transform: translate(-50%, -50%) scale(1); }
}

/* ============================================
   SCREEN SHAKE
   ============================================ */

.shake {
    animation: screen-shake 0.5s ease-out;
}

@keyframes screen-shake {
    0%, 100% { transform: translateX(0); }
    10% { transform: translateX(-5px); }
    20% { transform: translateX(5px); }
    30% { transform: translateX(-4px); }
    40% { transform: translateX(4px); }
    50% { transform: translateX(-3px); }
    60% { transform: translateX(3px); }
    70% { transform: translateX(-2px); }
    80% { transform: translateX(2px); }
    90% { transform: translateX(-1px); }
}

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

@media (max-width: 768px) {
    .hud-corner {
        --hud-padding: var(--hud-padding-mobile);
    }

    .hud-value {
        font-size: 14px;
    }

    .logo-text {
        font-size: 24px;
        letter-spacing: 4px;
    }

    .logo-symbol {
        font-size: 48px;
    }

    .enter-button {
        padding: 12px 32px;
        font-size: 14px;
    }

    .tx-panel {
        width: 90%;
        min-width: auto;
    }

    .side-menu {
        width: 100%;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.hidden {
    display: none !important;
}

.no-select {
    user-select: none;
    -webkit-user-select: none;
}

/* Loading indicator */
.loading::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border: 2px solid var(--electric-cyan);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 8px;
}

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