/* ============================================
   Main Styles & CSS Variables
   ============================================ */

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

:root {
    /* Primary Colors - Viral Frame Black & Green Theme */
    --primary-color: #5FD86B;
    --primary-dark: #4FC05B;
    --primary-light: #7FE58F;
    --neon-green: #5FD86B;
    --neon-green-dark: #4FC05B;
    --accent-red: #FF4444;

    /* Neutral Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B8B8B8;
    --text-light: #888888;
    --text-muted: #666666;

    /* Background Colors */
    --bg-primary: #000000;
    --bg-secondary: #0A0A0A;
    --bg-tertiary: #111111;
    --bg-card: #0D0D0D;
    --bg-hover: #1A1A1A;

    /* Border & Divider */
    --border-color: #1A1A1A;
    --divider-color: #2A2A2A;
    --border-glow: rgba(95, 216, 107, 0.4);

    /* Shadows - Neon Glow Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.8);
    --shadow: 0 2px 8px 0 rgba(95, 216, 107, 0.2);
    --shadow-md: 0 4px 12px 0 rgba(95, 216, 107, 0.3);
    --shadow-lg: 0 8px 24px 0 rgba(95, 216, 107, 0.4);
    --glow-sm: 0 0 15px rgba(95, 216, 107, 0.4);
    --glow-md: 0 0 25px rgba(95, 216, 107, 0.5);
    --glow-lg: 0 0 40px rgba(95, 216, 107, 0.6);

    /* Spacing - Reduced for compact layout */
    --spacing-xs: 0.375rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1050;

    /* Fonts */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Typography */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    background-image:
        radial-gradient(circle at 20% 50%, rgba(0, 255, 65, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 255, 65, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(0, 255, 65, 0.02) 0%, transparent 50%);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

/* Lists */
ul, ol {
    list-style-position: inside;
    margin-bottom: var(--spacing-sm);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* Section */
.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.section:nth-child(even) {
    background-color: var(--bg-secondary);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-tag {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    margin: 0 auto;
    border-radius: var(--radius-full);
    box-shadow: var(--glow-sm);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: var(--glow-sm);
    }
    50% {
        box-shadow: var(--glow-md);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--primary-color);
    color: #000;
    box-shadow: var(--glow-sm);
    font-weight: 700;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: var(--glow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: inset 0 0 0 0 var(--primary-color);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #000;
    box-shadow: var(--glow-sm), inset 0 0 0 2px var(--primary-color);
    transform: translateY(-3px);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 65, 0.1), transparent);
    transition: left 0.5s;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    box-shadow: var(--shadow-lg), var(--glow-sm);
    transform: translateY(-6px) scale(1.02);
    border-color: var(--border-glow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
    gap: var(--spacing-sm);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.card-date {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
    white-space: nowrap;
}

.card-content {
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-content ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.card-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.card-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Position Logo */
.position-logo {
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.position-logo img {
    height: 60px;
    width: auto;
    max-width: 150px;
    object-fit: contain;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Advanced Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes glitch {
    0% {
        text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75),
                    -0.025em -0.05em 0 rgba(0, 255, 0, 0.75),
                    0.025em 0.05em 0 rgba(0, 0, 255, 0.75);
    }
    14% {
        text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75),
                    -0.025em -0.05em 0 rgba(0, 255, 0, 0.75),
                    0.025em 0.05em 0 rgba(0, 0, 255, 0.75);
    }
    15% {
        text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75),
                    0.025em 0.025em 0 rgba(0, 255, 0, 0.75),
                    -0.05em -0.05em 0 rgba(0, 0, 255, 0.75);
    }
    49% {
        text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75),
                    0.025em 0.025em 0 rgba(0, 255, 0, 0.75),
                    -0.05em -0.05em 0 rgba(0, 0, 255, 0.75);
    }
    50% {
        text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75),
                    0.05em 0 0 rgba(0, 255, 0, 0.75),
                    0 -0.05em 0 rgba(0, 0, 255, 0.75);
    }
    99% {
        text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75),
                    0.05em 0 0 rgba(0, 255, 0, 0.75),
                    0 -0.05em 0 rgba(0, 0, 255, 0.75);
    }
    100% {
        text-shadow: -0.025em 0 0 rgba(255, 0, 0, 0.75),
                    -0.025em -0.025em 0 rgba(0, 255, 0, 0.75),
                    -0.025em -0.05em 0 rgba(0, 0, 255, 0.75);
    }
}

@keyframes neon-flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        text-shadow: 0 0 10px var(--neon-green),
                     0 0 20px var(--neon-green),
                     0 0 30px var(--neon-green);
    }
    20%, 24%, 55% {
        text-shadow: none;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes rotate-gradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }

/* Responsive */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 1.75rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 1.75rem;
        --spacing-3xl: 2rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .card-header {
        flex-direction: column;
    }

    .card-date {
        white-space: normal;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
}