/* ==========================================================================
   CyberJet 3D: Net Rush - Next-Gen Soft Golden UI Design System
   Refined Minimalist Typography, Floating Capsule Header & Soft Golden Theme
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,400;1,600&family=Inter:wght@400;500;600;700;800;900&family=Orbitron:wght@600;700;800;900&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
    --bg-dark: #080705;
    --bg-surface: rgba(20, 17, 12, 0.88);
    --bg-surface-elevated: rgba(30, 24, 16, 0.95);
    --primary-gold: #ffd166;
    --primary-gold-light: #fff3c4;
    --primary-gold-glow: rgba(255, 209, 102, 0.55);
    --primary-gold-dim: rgba(255, 209, 102, 0.18);
    --accent-amber: #f59e0b;
    --accent-amber-glow: rgba(245, 158, 11, 0.45);
    --accent-coral: #ff6b6b;
    --accent-coral-glow: rgba(255, 107, 107, 0.45);
    --emerald-accent: #10b981;
    --emerald-glow: rgba(16, 185, 129, 0.4);
    --card-border: rgba(255, 209, 102, 0.28);
    --card-border-highlight: rgba(255, 255, 255, 0.22);
    --card-blur: blur(20px);
    --font-heading: 'Outfit', 'Inter', 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Be Vietnam Pro', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-tech: 'Orbitron', 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, monospace, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-full: 9999px;
    
    /* iOS Safe Area Insets (Notch & Dynamic Island Protection) */
    --sat: env(safe-area-inset-top, 0px);
    --sar: env(safe-area-inset-right, 0px);
    --sab: env(safe-area-inset-bottom, 0px);
    --sal: env(safe-area-inset-left, 0px);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent !important;
    -webkit-touch-callout: none !important;
    -webkit-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    user-select: none !important;
    -webkit-user-drag: none;
    outline: none;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: var(--font-body);
    color: #f8fafc;
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overscroll-behavior: none;
}


/* ==========================================================================
   SHARED BUTTONS & CONTROLS
   ========================================================================== */
/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.3px;
    cursor: pointer;
    border: none;
    outline: none;
    position: relative;
    overflow: hidden;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.btn-svg-icon,
.svg-ico {
    width: 15px;
    height: 15px;
    fill: currentColor;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.btn:hover .btn-svg-icon {
    transform: scale(1.12);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-gold) 0%, var(--accent-amber) 100%);
    color: #080705;
    box-shadow: 0 4px 16px var(--primary-gold-glow);
    padding: 11px 22px;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(255, 209, 102, 0.6);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-revive {
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    color: #fff;
    box-shadow: 0 4px 16px var(--accent-amber-glow);
    padding: 11px 22px;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
}

.btn-revive:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(245, 158, 11, 0.6);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: #f1f5f9;
    border: 1.2px solid rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--primary-gold);
    color: #fff;
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-full);
    background: var(--bg-surface);
    border: 1.2px solid var(--card-border);
    color: var(--primary-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: var(--primary-gold-dim);
    border-color: var(--primary-gold);
    transform: scale(1.05);
}

.btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 16px;
}


/* Utility Classes */
.hidden {
    display: none !important;
}

/* ================= UPDATE NOTIFICATION PROMPT (Zero-Nag UX) ================= */
.update-prompt {
    position: fixed;
    bottom: calc(24px + env(safe-area-inset-bottom, 0px));
    left: 50%;
    transform: translateX(-50%) translateY(120px);
    background: rgba(20, 17, 12, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1.5px solid rgba(255, 209, 102, 0.45);
    color: #ffffff;
    padding: 10px 12px 10px 16px;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow:
        0 16px 40px rgba(0, 0, 0, 0.75),
        0 0 25px rgba(255, 209, 102, 0.2);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 9999;
    max-width: calc(100vw - 28px);
}

.update-prompt.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.update-prompt-text {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    color: #f4f4f5;
}

.update-prompt-btn {
    background: linear-gradient(135deg, #ffd166 0%, #f59e0b 100%);
    color: #080705;
    border: none;
    padding: 7px 15px;
    border-radius: 10px;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
    transition: transform 0.15s ease;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.update-prompt-btn:hover {
    transform: scale(1.04);
}

.update-prompt-btn:active {
    transform: scale(0.96);
}

.update-prompt-close {
    background: transparent;
    border: none;
    color: #a1a1aa;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: color 0.15s ease;
}

.update-prompt-close:hover {
    color: #ffffff;
}