/* ============================================
   MLBB Tournament Management System
   Base CSS - Navy Blue Esports Theme
   ============================================ */

/* === CSS Variables === */
:root {
    --navy-darkest: #0a0e1a;
    --navy-darker: #0d1321;
    --navy-dark: #131a2e;
    --navy-main: #1a2342;
    --navy-mid: #1e2a4a;
    --navy-light: #243055;
    --navy-lighter: #2d3a68;
    --navy-accent: #3b4a7a;
    --blue-glow: #4a7dff;
    --blue-bright: #5b8cff;
    --blue-electric: #6ea0ff;
    --blue-neon: #82b1ff;
    --gold: #ffd700;
    --gold-light: #ffe44d;
    --gold-dark: #c7a600;
    --cyan: #00e5ff;
    --cyan-dark: #00b8d4;
    --magenta: #e040fb;
    --red: #ff4757;
    --red-dark: #c0392b;
    --green: #2ed573;
    --green-dark: #1e9e50;
    --orange: #ffa502;
    --white: #ffffff;
    --white-soft: #e8eaf6;
    --gray-light: #b0bec5;
    --gray: #78909c;
    --gray-dark: #546e7a;
    --text-primary: #e8eaf6;
    --text-secondary: #9fa8da;
    --text-muted: #7986cb;

    --font-main: 'Inter', 'Segoe UI', sans-serif;
    --font-heading: 'Orbitron', 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(74, 125, 255, 0.3);
    --shadow-glow-lg: 0 0 40px rgba(74, 125, 255, 0.4);
    --shadow-gold: 0 0 20px rgba(255, 215, 0, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    --glass-bg: rgba(26, 35, 66, 0.6);
    --glass-border: rgba(74, 125, 255, 0.15);
    --glass-highlight: rgba(255, 255, 255, 0.05);
}

/* === Google Fonts Import === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Orbitron:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--navy-light) var(--navy-darker);
}

body {
    font-family: var(--font-main);
    background: var(--navy-darkest);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(74, 125, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 229, 255, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(224, 64, 251, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

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

::-webkit-scrollbar-track {
    background: var(--navy-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--navy-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--blue-glow);
}

/* === Typography === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

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

a:hover {
    color: var(--blue-neon);
    text-shadow: 0 0 8px rgba(74, 125, 255, 0.5);
}

/* === Glassmorphism Card === */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--glass-highlight), transparent);
}

.glass-card:hover {
    border-color: rgba(74, 125, 255, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

/* === Buttons === */
.btn-glow {
    background: linear-gradient(135deg, var(--blue-glow), var(--blue-bright));
    color: var(--white);
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px rgba(74, 125, 255, 0.3);
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition-slow);
}

.btn-glow:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(74, 125, 255, 0.5);
}

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

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

.btn-gold {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold), var(--gold-light));
    color: var(--navy-darkest);
    border: none;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
    color: var(--navy-darkest);
}

.btn-danger {
    background: linear-gradient(135deg, var(--red-dark), var(--red));
    color: var(--white);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 71, 87, 0.4);
    color: var(--white);
}

.btn-success-custom {
    background: linear-gradient(135deg, var(--green-dark), var(--green));
    color: var(--white);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

.btn-success-custom:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(46, 213, 115, 0.4);
    color: var(--white);
}

/* === Form Controls === */
.form-control-dark {
    background: var(--navy-darker) !important;
    border: 1px solid var(--navy-light) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    transition: var(--transition-normal);
}

.form-control-dark:focus {
    border-color: var(--blue-glow) !important;
    box-shadow: 0 0 0 3px rgba(74, 125, 255, 0.15) !important;
    background: var(--navy-dark) !important;
}

.form-control-dark::placeholder {
    color: var(--text-muted);
}

.form-label-glow {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.form-select-dark {
    background-color: var(--navy-darker) !important;
    border: 1px solid var(--navy-light) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-sm);
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%239fa8da' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right 0.75rem center !important;
    background-size: 16px 12px !important;
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.95rem;
    width: 100%;
}

.form-select-dark:focus {
    border-color: var(--blue-glow) !important;
    box-shadow: 0 0 0 3px rgba(74, 125, 255, 0.15) !important;
    background-color: var(--navy-dark) !important;
    outline: none;
}

.form-select-dark option {
    background: var(--navy-darker);
    color: var(--text-primary);
    padding: 0.5rem;
}

/* === Status Badges === */
.badge-status {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-pending {
    background: rgba(255, 165, 2, 0.15);
    color: var(--orange);
    border: 1px solid rgba(255, 165, 2, 0.3);
}

.badge-waiting {
    background: rgba(0, 229, 255, 0.15);
    color: var(--cyan);
    border: 1px solid rgba(0, 229, 255, 0.3);
}

.badge-verified {
    background: rgba(46, 213, 115, 0.15);
    color: var(--green);
    border: 1px solid rgba(46, 213, 115, 0.3);
}

.badge-rejected {
    background: rgba(255, 71, 87, 0.15);
    color: var(--red);
    border: 1px solid rgba(255, 71, 87, 0.3);
}

.badge-checkedin {
    background: rgba(74, 125, 255, 0.15);
    color: var(--blue-bright);
    border: 1px solid rgba(74, 125, 255, 0.3);
}

/* === Tables === */
.table-dark-custom {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-dark-custom thead th {
    background: var(--navy-mid);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 1rem;
    border-bottom: 2px solid var(--blue-glow);
    white-space: nowrap;
}

.table-dark-custom tbody tr {
    transition: var(--transition-fast);
}

.table-dark-custom tbody tr:hover {
    background: rgba(74, 125, 255, 0.08);
}

.table-dark-custom tbody td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid rgba(74, 125, 255, 0.08);
    color: var(--text-primary);
    vertical-align: middle;
}

/* === Navbar === */
.navbar-esports {
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0.75rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1050;
    transition: var(--transition-normal);
}

.navbar-brand-glow {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
    background: linear-gradient(135deg, var(--blue-glow), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

/* Hamburger toggler */
.navbar-esports .navbar-toggler {
    background: rgba(74, 125, 255, 0.12);
    border: 1px solid rgba(74, 125, 255, 0.3) !important;
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.6rem;
    transition: var(--transition-fast);
}

.navbar-esports .navbar-toggler:hover,
.navbar-esports .navbar-toggler:focus {
    background: rgba(74, 125, 255, 0.25);
    border-color: var(--blue-glow) !important;
    box-shadow: 0 0 12px rgba(74, 125, 255, 0.3);
    outline: none;
}

.navbar-esports .navbar-toggler .bi-list {
    color: var(--white) !important;
    font-size: 1.4rem;
    line-height: 1;
}

/* === Sidebar (Admin) === */
.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--navy-darker);
    border-right: 1px solid var(--glass-border);
    padding-top: 1rem;
    z-index: 1040;
    overflow-y: auto;
    transition: var(--transition-normal);
}

.sidebar-brand {
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-brand h5 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    background: linear-gradient(135deg, var(--blue-glow), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.sidebar-brand small {
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav .nav-item {
    margin: 2px 8px;
}

.sidebar-nav .nav-link {
    color: var(--text-secondary);
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-fast);
}

.sidebar-nav .nav-link i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-nav .nav-link:hover {
    background: rgba(74, 125, 255, 0.1);
    color: var(--blue-bright);
}

.sidebar-nav .nav-link.active {
    background: linear-gradient(135deg, rgba(74, 125, 255, 0.2), rgba(0, 229, 255, 0.1));
    color: var(--blue-bright);
    border-left: 3px solid var(--blue-glow);
}

.admin-content {
    margin-left: 260px;
    padding: 2rem;
    min-height: 100vh;
}

.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

/* === Stat Cards === */
.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    border-radius: 0 var(--radius-lg) 0 50%;
    opacity: 0.1;
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.stat-card:hover::after {
    opacity: 0.2;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.stat-card .stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-card .stat-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-blue .stat-icon {
    background: rgba(74, 125, 255, 0.15);
    color: var(--blue-bright);
}

.stat-blue .stat-number {
    color: var(--blue-bright);
}

.stat-blue::after {
    background: var(--blue-glow);
}

.stat-green .stat-icon {
    background: rgba(46, 213, 115, 0.15);
    color: var(--green);
}

.stat-green .stat-number {
    color: var(--green);
}

.stat-green::after {
    background: var(--green);
}

.stat-gold .stat-icon {
    background: rgba(255, 215, 0, 0.15);
    color: var(--gold);
}

.stat-gold .stat-number {
    color: var(--gold);
}

.stat-gold::after {
    background: var(--gold);
}

.stat-cyan .stat-icon {
    background: rgba(0, 229, 255, 0.15);
    color: var(--cyan);
}

.stat-cyan .stat-number {
    color: var(--cyan);
}

.stat-cyan::after {
    background: var(--cyan);
}

.stat-red .stat-icon {
    background: rgba(255, 71, 87, 0.15);
    color: var(--red);
}

.stat-red .stat-number {
    color: var(--red);
}

.stat-red::after {
    background: var(--red);
}

.stat-magenta .stat-icon {
    background: rgba(224, 64, 251, 0.15);
    color: var(--magenta);
}

.stat-magenta .stat-number {
    color: var(--magenta);
}

.stat-magenta::after {
    background: var(--magenta);
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 5px rgba(74, 125, 255, 0.3);
    }

    50% {
        box-shadow: 0 0 20px rgba(74, 125, 255, 0.6), 0 0 40px rgba(74, 125, 255, 0.3);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes rotate-slow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

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

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

@keyframes typewriter {
    from {
        width: 0;
    }

    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

@keyframes scale-in {
    from {
        transform: scale(0.8);
        opacity: 0;
    }

    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes bounce-in {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }

    50% {
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes particle-float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0.5;
    }

    25% {
        transform: translateY(-30px) translateX(10px);
        opacity: 1;
    }

    50% {
        transform: translateY(-60px) translateX(-10px);
        opacity: 0.5;
    }

    75% {
        transform: translateY(-30px) translateX(15px);
        opacity: 0.8;
    }
}

@keyframes border-glow {

    0%,
    100% {
        border-color: rgba(74, 125, 255, 0.2);
    }

    50% {
        border-color: rgba(74, 125, 255, 0.6);
    }
}

@keyframes count-up {
    from {
        opacity: 0;
        transform: scale(0.5);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Animation Classes */
.animate-fade-up {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.animate-fade-down {
    animation: fadeInDown 0.6s ease-out forwards;
    opacity: 0;
}

.animate-fade-left {
    animation: fadeInLeft 0.6s ease-out forwards;
    opacity: 0;
}

.animate-fade-right {
    animation: fadeInRight 0.6s ease-out forwards;
    opacity: 0;
}

.animate-slide-up {
    animation: slideInUp 0.8s ease-out forwards;
    opacity: 0;
}

.animate-scale-in {
    animation: scale-in 0.5s ease-out forwards;
    opacity: 0;
}

.animate-bounce-in {
    animation: bounce-in 0.8s ease-out forwards;
    opacity: 0;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.05) 50%, transparent 100%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* Animation Delays */
.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}

.delay-5 {
    animation-delay: 0.5s;
}

.delay-6 {
    animation-delay: 0.6s;
}

.delay-7 {
    animation-delay: 0.7s;
}

.delay-8 {
    animation-delay: 0.8s;
}

/* === Utility Classes === */
.text-gradient {
    background: linear-gradient(135deg, var(--blue-glow), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gold {
    background: linear-gradient(135deg, var(--gold-dark), var(--gold), var(--gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
}

.border-glow {
    border: 1px solid var(--glass-border);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-muted);
    text-align: center;
    font-size: 1rem;
    margin-bottom: 3rem;
}

/* === Alert Custom === */
.alert-esports {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-esports.alert-success {
    border-left: 4px solid var(--green);
}

.alert-esports.alert-danger {
    border-left: 4px solid var(--red);
}

.alert-esports.alert-warning {
    border-left: 4px solid var(--orange);
}

.alert-esports.alert-info {
    border-left: 4px solid var(--blue-glow);
}

/* === Particles Background === */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--blue-glow);
    border-radius: 50%;
    opacity: 0.3;
    animation: particle-float 8s ease-in-out infinite;
}

/* === Loading Spinner === */
.spinner-esports {
    width: 40px;
    height: 40px;
    border: 3px solid var(--navy-light);
    border-top: 3px solid var(--blue-glow);
    border-radius: 50%;
    animation: rotate-slow 1s linear infinite;
}

/* === Responsive === */

/* --- Tablet (max-width: 992px) --- */
@media (max-width: 992px) {
    .admin-sidebar {
        transform: translateX(-100%);
        z-index: 1060;
        box-shadow: none;
    }

    .admin-sidebar.show {
        transform: translateX(0);
        box-shadow: 10px 0 40px rgba(0, 0, 0, 0.5);
    }

    .admin-content {
        margin-left: 0;
        padding: 1.25rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.35rem;
    }

    h3 {
        font-size: 1.15rem;
    }

    .admin-topbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Navbar mobile dropdown */
    .navbar-collapse {
        background: var(--navy-darker);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-md);
        padding: 1rem;
        margin-top: 0.75rem;
        box-shadow: var(--shadow-lg);
    }

    .navbar-collapse .nav-link {
        padding: 0.65rem 1rem !important;
        border-radius: var(--radius-sm);
        margin-bottom: 2px;
    }

    .navbar-collapse .nav-link:hover {
        background: rgba(74, 125, 255, 0.1);
    }

    .navbar-collapse .btn-glow {
        display: block;
        text-align: center;
        margin-left: 0 !important;
        margin-top: 0.5rem;
    }
}

/* --- Mobile (max-width: 768px) --- */
@media (max-width: 768px) {
    body {
        font-size: 0.95rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    h3 {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .section-subtitle {
        font-size: 0.85rem;
        margin-bottom: 2rem;
    }

    .glass-card {
        padding: 1rem;
        border-radius: var(--radius-md);
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-card .stat-number {
        font-size: 1.5rem;
    }

    .stat-card .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.75rem !important;
    }

    /* Tables scroll horizontally */
    .table-responsive {
        margin: 0 -0.5rem;
    }

    .table-dark-custom {
        font-size: 0.8rem;
    }

    .table-dark-custom thead th {
        padding: 0.6rem 0.5rem;
        font-size: 0.65rem;
    }

    .table-dark-custom tbody td {
        padding: 0.6rem 0.5rem;
    }

    /* Buttons */
    .btn-glow,
    .btn-gold,
    .btn-danger,
    .btn-success-custom {
        padding: 0.6rem 1.25rem;
        font-size: 0.8rem;
    }

    /* Forms */
    .form-control-dark,
    .form-select-dark {
        padding: 0.6rem 0.75rem;
        font-size: 0.9rem;
    }

    .form-label-glow {
        font-size: 0.8rem;
    }

    /* Alerts */
    .alert-esports {
        padding: 0.75rem 1rem;
        font-size: 0.85rem;
    }

    /* Navbar mobile adjustments */
    .navbar-esports {
        padding: 0.5rem 0;
    }

    .navbar-brand-glow {
        font-size: 1rem;
    }

    /* Admin sidebar overlay backdrop */
    .admin-sidebar.show~.admin-content::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1055;
    }

    .admin-content {
        padding: 1rem;
    }

    .admin-topbar {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        padding-bottom: 0.75rem;
        margin-bottom: 1.25rem;
    }

    .admin-topbar h2 {
        font-size: 1.1rem !important;
    }

    /* Quick action buttons */
    .quick-actions {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    /* Chart cards */
    .chart-card {
        padding: 1rem;
    }

    /* Notification banner */
    .notif-banner {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem !important;
        padding: 1rem !important;
    }

    /* Slot tracker */
    .slot-tracker {
        padding: 1rem;
    }
}

/* --- Small Mobile (max-width: 480px) --- */
@media (max-width: 480px) {
    h1 {
        font-size: 1.3rem;
    }

    h2 {
        font-size: 1.1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 0.5rem !important;
    }

    .stat-card .stat-number {
        font-size: 1.25rem;
    }

    .stat-card .stat-label {
        font-size: 0.7rem;
    }

    .glass-card {
        padding: 0.75rem;
    }

    .btn-glow,
    .btn-gold {
        padding: 0.5rem 1rem;
        font-size: 0.75rem;
        letter-spacing: 0.3px;
    }

    .section-title {
        font-size: 1.2rem;
    }

    .navbar-brand-glow {
        font-size: 0.9rem;
    }

    .table-dark-custom {
        font-size: 0.75rem;
    }

    .table-dark-custom thead th {
        font-size: 0.6rem;
        padding: 0.5rem 0.4rem;
    }

    .table-dark-custom tbody td {
        padding: 0.5rem 0.4rem;
    }
}

/* === Modal Override (dark) === */
.modal-content {
    background: var(--navy-dark) !important;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border);
}

.modal-footer {
    border-top: 1px solid var(--glass-border);
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* === Toast / Notification === */
.toast-esports {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    min-width: 300px;
}