/* ===================================
   Blockterra Games - Design System
   =================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a25;
    --color-bg-card: rgba(26, 26, 37, 0.8);

    /* Accent Colors */
    --color-primary: #41D1EC;
    --color-primary-light: #7EE7F9;
    --color-secondary: #F949EF;
    --color-accent: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #41D1EC 0%, #F949EF 100%);
    --gradient-hero: linear-gradient(135deg, #41D1EC 0%, #29b6d1 30%, #F949EF 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(65, 209, 236, 0.3) 0%, transparent 70%);

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.4);

    /* Border & Effects */
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-hover: rgba(65, 209, 236, 0.5);
    --shadow-glow: 0 0 30px rgba(65, 209, 236, 0.3);
    --shadow-glow-strong: 0 0 60px rgba(65, 209, 236, 0.5);

    /* Typography */
    --font-pixel: 'Press Start 2P', monospace;
    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Container */
    --container-max: 1220px;
    --container-padding: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Border Radius - STRICT BLOCK */
    --radius-sm: 2px;
    --radius-md: 0px;
    --radius-lg: 0px;
    --radius-xl: 0px;

    /* Block Shadows */
    --shadow-block: 4px 4px 0px 0px;
    --shadow-block-hover: 6px 6px 0px 0px;
    --shadow-block-active: 2px 2px 0px 0px;

    /* Z-Index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;

    color-scheme: dark;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-primary);
    /* Fix for Safari UI transitions */
    overflow-x: hidden;
    /* Prevent horizontal scroll at root level */
    /* Hide scrollbar - Firefox */
    scrollbar-width: none;
    -ms-overflow-style: none;
    /* IE/Edge */
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Grid Pattern */
/* Background Grid Pattern removed */

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Section Styling */
section {
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-family: var(--font-pixel);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-primary-light);
    background: rgba(65, 209, 236, 0.1);
    border: 1px solid rgba(65, 209, 236, 0.3);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-lg);
    white-space: nowrap;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Block Utilities */
.block-depth {
    box-shadow: var(--shadow-block) var(--color-primary);
    border: 2px solid var(--color-primary);
}

.block-hover {
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.block-hover:hover {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-block-hover) var(--color-secondary);
    border-color: var(--color-secondary);
}

/* Button Styles - NEON BLOCK */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-pixel);
    font-weight: 400;
    font-size: 0.6rem;
    padding: var(--space-lg) var(--space-2xl);
    border-radius: 0px;
    border: none;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    forced-color-adjust: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    filter: blur(15px);
    opacity: 0.5;
    z-index: -1;
    transition: all 0.2s ease;
}

.btn:hover::before {
    filter: blur(25px);
    opacity: 0.8;
}

.btn:active {
    transform: translate(2px, 2px) scale(0.98);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: #000;
    box-shadow:
        4px 4px 0px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(65, 209, 236, 0.3),
        0 0 40px rgba(249, 73, 239, 0.2);
}

.btn-primary:hover {
    transform: translate(-4px, -4px);
    box-shadow:
        8px 8px 0px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(65, 209, 236, 0.5),
        0 0 60px rgba(249, 73, 239, 0.4);
}

.btn-primary:active {
    box-shadow:
        2px 2px 0px rgba(0, 0, 0, 0.5),
        0 0 15px rgba(65, 209, 236, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 4px 4px 0px rgba(0, 0, 0, 0.3);
}

.btn-secondary:hover {
    transform: translate(-4px, -4px);
    border-color: var(--color-primary);
    box-shadow:
        8px 8px 0px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(65, 209, 236, 0.3);
    background: rgba(65, 209, 236, 0.1);
}

.btn-secondary:active {
    transform: translate(2px, 2px) scale(0.98);
    box-shadow: 2px 2px 0px rgba(0, 0, 0, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    box-shadow: 4px 4px 0px rgba(65, 209, 236, 0.3);
}

.btn-outline:hover {
    transform: translate(-4px, -4px);
    background: var(--color-primary);
    color: #000;
    box-shadow:
        8px 8px 0px rgba(0, 0, 0, 0.5),
        0 0 25px rgba(65, 209, 236, 0.4);
}

.btn-large {
    padding: var(--space-lg) var(--space-3xl);
    font-size: 0.7rem;
}

/* Pixel Art Styling */
.pixel-border {
    image-rendering: pixelated;
    border: 4px solid;
    border-color: #fff #888 #888 #fff;
}

.pixel-text {
    font-family: var(--font-pixel);
    image-rendering: pixelated;
}

/* Gradient Text */
.gradient-text,
.highlight {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    forced-color-adjust: none;
}

/* Glow Effect */
.glow {
    box-shadow: var(--shadow-glow);
}

.glow-text {
    text-shadow:
        0 0 10px rgba(65, 209, 236, 0.5),
        0 0 20px rgba(65, 209, 236, 0.3),
        0 0 40px rgba(65, 209, 236, 0.2);
}

/* Card Base */
.card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: 0px;
    backdrop-filter: blur(10px);
    transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.card:hover {
    border-color: var(--color-primary);
    transform: translate(-4px, -4px);
    box-shadow: var(--shadow-block) var(--color-primary);
}

/* Scrollbar - Hidden for game-like UI */
::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Opera */
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: white;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    :root {
        --container-padding: 2rem;
        --space-3xl: 3rem;
        /* Reduce large vertical gaps */
        --space-4xl: 4rem;
    }

    .section-title {
        font-size: 2.25rem;
        /* Slightly smaller than desktop */
    }
}

/* Optimization: Disable heavy blur filters on mobile/tablets (up to iPad Pro landscape) */
@media (max-width: 1366px) {

    .header,
    .mobile-nav,
    .card,
    .modal-container,
    .progress-block,
    .progress-marker,
    .roadmap-marker {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .header {
        background: rgba(10, 10, 15, 0.98) !important;
    }

    .card {
        background: rgba(26, 26, 37, 0.98) !important;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .section-header {
        margin-bottom: var(--space-2xl);
        padding: 0 var(--container-padding);
    }

    /* Mobile font size fixes for readability */
    .section-label {
        font-size: 0.55rem;
        /* ~8.25px */
    }

    .section-subtitle {
        font-size: 1rem;
        /* 16px */
    }

    .btn {
        font-size: 0.8rem;
        /* ~12.8px */
        padding: var(--space-md) var(--space-xl);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
        /* Increased from 14px for better readability */
    }
}