/* ================================================================
   ULTIMATE DARK THEME 2025
   Full Dark Mode + Transparent Glassmorphism Design
   ================================================================ */

:root {
    /* Dark Color Palette */
    --primary: #00bfff;
    --primary-light: #4dd9ff;
    --primary-dark: #0099cc;
    --secondary: #34c759;
    --accent: #ff3b30;
    --success: #34c759;
    --warning: #ffcc00;
    --danger: #ff3b30;
    --info: #7c3aed;

    /* Dark Theme Backgrounds - All Transparent */
    --bg-primary: rgba(0, 0, 0, 0.95);
    --bg-secondary: rgba(10, 10, 20, 0.9);
    --bg-tertiary: rgba(20, 20, 35, 0.85);
    --bg-card: rgba(15, 15, 30, 0.92);
    --bg-hover: rgba(30, 30, 50, 0.88);
    --bg-input: rgba(25, 25, 40, 0.95);
    --bg-button: rgba(0, 191, 255, 0.15);
    --bg-button-hover: rgba(0, 191, 255, 0.25);

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.85);
    --text-muted: rgba(255, 255, 255, 0.65);
    --text-hint: rgba(255, 255, 255, 0.45);

    /* Borders and Dividers */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-strong: rgba(255, 255, 255, 0.15);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.6);

    /* Glassmorphism */
    --glass-effect: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(10px);
    --glass-border: rgba(255, 255, 255, 0.15);

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

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease-out;
    --transition-base: 250ms ease-out;
    --transition-slow: 350ms ease-out;

    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1050;
    --z-tooltip: 1070;
}

/* ================================================================
   GLOBAL RESET & DARK THEME APPLICATION
   ================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background: transparent;
    color-scheme: dark;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95) 0%, rgba(10, 10, 25, 0.9) 50%, rgba(0, 0, 0, 0.95) 100%);
    background-attachment: fixed;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(0, 191, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(122, 60, 237, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 1;
}

/* ================================================================
   TYPOGRAPHY SYSTEM
   ================================================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 4px 24px rgba(0, 191, 255, 0.15);
}

h2 {
    font-size: 2rem;
    text-shadow: 0 2px 12px rgba(0, 191, 255, 0.1);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

small {
    color: var(--text-muted);
    font-size: 0.875rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
}

a:hover {
    color: var(--primary-light);
    text-shadow: 0 0 8px rgba(0, 191, 255, 0.5);
}

a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--primary);
    transition: width var(--transition-base);
}

a:hover::after {
    width: 100%;
}

/* ================================================================
   CONTAINERS & SECTIONS
   ================================================================ */

.container {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xl);
    transition: all var(--transition-base);
}

.container:hover {
    background: var(--bg-secondary);
    border-color: var(--primary);
    box-shadow: 0 8px 32px rgba(0, 191, 255, 0.1);
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

/* ================================================================
   BUTTONS
   ================================================================ */

button,
.btn,
[role="button"] {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary,
button:not([class*="btn-"]) {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 191, 255, 0.3);
}

.btn-primary:hover,
button:not([class*="btn-"]):hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: 0 8px 25px rgba(0, 191, 255, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-button);
    color: var(--primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-button-hover);
    border-color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 191, 255, 0.2);
}

.btn-danger {
    background: rgba(255, 59, 48, 0.15);
    color: var(--danger);
    border: 1px solid rgba(255, 59, 48, 0.3);
}

.btn-danger:hover {
    background: rgba(255, 59, 48, 0.25);
    border-color: var(--danger);
    box-shadow: 0 4px 15px rgba(255, 59, 48, 0.2);
}

.btn-success {
    background: rgba(52, 199, 89, 0.15);
    color: var(--success);
    border: 1px solid rgba(52, 199, 89, 0.3);
}

.btn-success:hover {
    background: rgba(52, 199, 89, 0.25);
    border-color: var(--success);
    box-shadow: 0 4px 15px rgba(52, 199, 89, 0.2);
}

/* ================================================================
   FORM ELEMENTS
   ================================================================ */

input,
textarea,
select {
    width: 100%;
    padding: var(--spacing-md);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    background: var(--bg-secondary);
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 191, 255, 0.1);
    transform: translateY(-2px);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-base);
}

/* ================================================================
   NAVBAR & HEADER
   ================================================================ */

.navbar {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    padding: var(--spacing-md) var(--spacing-lg);
    position: sticky;
    top: 0;
    z-index: var(--z-fixed);
}

.navbar:hover {
    background: rgba(0, 0, 0, 0.8);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand:hover {
    color: var(--primary-light);
    text-shadow: 0 0 12px rgba(0, 191, 255, 0.4);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: width var(--transition-base);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

/* ================================================================
   TABLES
   ================================================================ */

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-xl);
}

thead {
    background: var(--bg-secondary);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    color: var(--text-primary);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

tbody tr {
    transition: all var(--transition-base);
}

tbody tr:hover {
    background: var(--bg-hover);
}

/* ================================================================
   ALERTS & NOTIFICATIONS
   ================================================================ */

.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.alert-primary {
    background: rgba(0, 191, 255, 0.1);
    border-left-color: var(--primary);
    color: var(--primary-light);
}

.alert-success {
    background: rgba(52, 199, 89, 0.1);
    border-left-color: var(--success);
    color: var(--success);
}

.alert-warning {
    background: rgba(255, 204, 0, 0.1);
    border-left-color: var(--warning);
    color: var(--warning);
}

.alert-danger {
    background: rgba(255, 59, 48, 0.1);
    border-left-color: var(--danger);
    color: var(--danger);
}

/* ================================================================
   PAGINATION
   ================================================================ */

.pagination {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    justify-content: center;
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.pagination a:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination .active,
.pagination .current {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    font-weight: 600;
}

/* ================================================================
   SCROLLBARS
   ================================================================ */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 191, 255, 0.4);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 191, 255, 0.6);
}

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

.text-primary {
    color: var(--primary);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.p-1 {
    padding: var(--spacing-sm);
}

.p-2 {
    padding: var(--spacing-md);
}

.p-3 {
    padding: var(--spacing-lg);
}

.p-4 {
    padding: var(--spacing-xl);
}

.glass {
    background: var(--glass-effect);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.shadow-xl {
    box-shadow: var(--shadow-xl);
}

.rounded-sm {
    border-radius: var(--radius-sm);
}

.rounded-md {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.rounded-xl {
    border-radius: var(--radius-xl);
}

.rounded-full {
    border-radius: var(--radius-full);
}

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

/* ================================================================
   ANIMATIONS
   ================================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

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

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 5px rgba(0, 191, 255, 0.2);
    }

    50% {
        box-shadow: 0 0 20px rgba(0, 191, 255, 0.4);
    }
}

.fade-in {
    animation: fadeIn var(--transition-base);
}

.slide-in {
    animation: slideIn var(--transition-base);
}

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

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

@media (max-width: 768px) {
    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .navbar {
        padding: var(--spacing-md);
    }

    .container {
        padding: var(--spacing-lg);
    }

    table {
        font-size: 0.875rem;
    }

    th,
    td {
        padding: var(--spacing-sm);
    }
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ================================================================
   PRINT STYLES
   ================================================================ */

@media print {
    body {
        background: white;
        color: black;
    }

    a {
        color: black;
    }

    .no-print {
        display: none;
    }
}