/* ============================================================
   RN-TECH GLOBAL PREMIUM THEME SYSTEM
   ============================================================
   Unified design language across entire platform
   Website + Admin Portal + All Future Pages
   ============================================================ */

/* ============================================================
   PART 1: GLOBAL CSS VARIABLES & DESIGN TOKENS
   ============================================================ */

:root {
    /* --- Core Color Palette --- */
    /* Primary: Neon Cyan (Primary Accent) */
    --rn-color-primary: #00f2ff;
    --rn-color-primary-dim: rgba(0, 242, 255, 0.1);
    --rn-color-primary-glow: rgba(0, 242, 255, 0.2);
    --rn-color-primary-deep: rgba(0, 242, 255, 0.05);
    
    /* Secondary: Electric Violet */
    --rn-color-secondary: #8a2be2;
    --rn-color-secondary-dim: rgba(138, 43, 226, 0.1);
    --rn-color-secondary-glow: rgba(138, 43, 226, 0.2);
    
    /* Accent: Crimson Pulse */
    --rn-color-accent: #ff0055;
    --rn-color-accent-dim: rgba(255, 0, 85, 0.1);
    --rn-color-accent-glow: rgba(255, 0, 85, 0.2);
    
    /* Success: Emerald Green */
    --rn-color-success: #28a745;
    --rn-color-success-dim: rgba(40, 167, 69, 0.1);
    --rn-color-success-glow: rgba(40, 167, 69, 0.2);
    
    /* Warning: Gold */
    --rn-color-warning: #e0b85a;
    --rn-color-warning-dim: rgba(224, 184, 90, 0.1);
    --rn-color-warning-glow: rgba(224, 184, 90, 0.2);
    
    /* Error: Red Neon */
    --rn-color-error: #ff4d4d;
    --rn-color-error-dim: rgba(255, 77, 77, 0.1);
    --rn-color-error-glow: rgba(255, 77, 77, 0.2);
    
    /* Background Palette */
    --rn-bg-darkest: #020205;
    --rn-bg-dark: #05050a;
    --rn-bg-card: rgba(255, 255, 255, 0.03);
    --rn-bg-overlay: rgba(15, 15, 25, 0.8);
    --rn-bg-hover: rgba(255, 255, 255, 0.05);
    --rn-bg-active: rgba(255, 255, 255, 0.08);
    
    /* Text Palette */
    --rn-text-primary: #ffffff;
    --rn-text-secondary: #94a3b8;
    --rn-text-muted: rgba(255, 255, 255, 0.6);
    --rn-text-dim: rgba(255, 255, 255, 0.4);
    
    /* Border & Glass */
    --rn-border-light: rgba(255, 255, 255, 0.05);
    --rn-border-default: rgba(255, 255, 255, 0.1);
    --rn-border-accent: rgba(0, 242, 255, 0.3);
    --rn-glass-blur: blur(20px);
    --rn-glass-backdrop: blur(20px) saturate(180%);
    
    /* --- Typography --- */
    --rn-font-primary: 'Outfit', sans-serif;
    --rn-font-serif: 'Playfair Display', serif;
    
    /* Font Weights */
    --rn-fw-light: 300;
    --rn-fw-normal: 400;
    --rn-fw-medium: 500;
    --rn-fw-semibold: 600;
    --rn-fw-bold: 700;
    
    /* Font Sizes */
    --rn-size-xs: 0.75rem;
    --rn-size-sm: 0.875rem;
    --rn-size-base: 1rem;
    --rn-size-lg: 1.125rem;
    --rn-size-xl: 1.5rem;
    --rn-size-2xl: 2rem;
    --rn-size-3xl: 2.5rem;
    --rn-size-4xl: 3rem;
    --rn-size-5xl: 3.5rem;
    
    /* --- Spacing Scale --- */
    --rn-space-xs: 0.5rem;
    --rn-space-sm: 1rem;
    --rn-space-md: 1.5rem;
    --rn-space-lg: 2rem;
    --rn-space-xl: 3rem;
    --rn-space-2xl: 4rem;
    --rn-space-3xl: 6rem;
    --rn-space-4xl: 8rem;
    --rn-space-5xl: 12rem;
    
    /* --- Border Radius --- */
    --rn-radius-xs: 6px;
    --rn-radius-sm: 10px;
    --rn-radius-md: 12px;
    --rn-radius-lg: 16px;
    --rn-radius-xl: 20px;
    --rn-radius-2xl: 24px;
    --rn-radius-3xl: 32px;
    --rn-radius-full: 9999px;
    
    /* --- Shadows & Glows --- */
    --rn-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --rn-shadow-md: 0 8px 16px rgba(0, 0, 0, 0.2);
    --rn-shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.25);
    --rn-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    
    --rn-glow-cyan: 0 0 25px rgba(0, 242, 255, 0.2);
    --rn-glow-cyan-intense: 0 0 40px rgba(0, 242, 255, 0.35);
    --rn-glow-violet: 0 0 25px rgba(138, 43, 226, 0.2);
    --rn-glow-violet-intense: 0 0 40px rgba(138, 43, 226, 0.35);
    --rn-glow-crimson: 0 0 25px rgba(255, 0, 85, 0.2);
    --rn-glow-gold: 0 0 25px rgba(224, 184, 90, 0.2);
    
    /* --- Transitions & Animations --- */
    --rn-transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --rn-transition-default: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --rn-transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --rn-transition-cinematic: 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    --rn-transition-ui: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* --- Breakpoints --- */
    --rn-breakpoint-xs: 320px;
    --rn-breakpoint-sm: 640px;
    --rn-breakpoint-md: 768px;
    --rn-breakpoint-lg: 1024px;
    --rn-breakpoint-xl: 1280px;
    --rn-breakpoint-2xl: 1536px;
}

/* ============================================================
   PART 2: RESET & BASE STYLES
   ============================================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--rn-font-primary);
    background-color: var(--rn-bg-darkest);
    color: var(--rn-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

/* --- Global Background System --- */
body::before,
body::after {
    content: '';
    position: fixed;
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.4;
}

body::before {
    background: radial-gradient(circle, var(--rn-color-secondary) 0%, transparent 70%);
    top: -20%;
    left: -10%;
    animation: rn-orbit-move-1 25s infinite alternate ease-in-out;
}

body::after {
    background: radial-gradient(circle, var(--rn-color-primary) 0%, transparent 70%);
    bottom: -20%;
    right: -10%;
    animation: rn-orbit-move-2 30s infinite alternate-reverse ease-in-out;
}

@keyframes rn-orbit-move-1 {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(15%, 15%) scale(1.2); }
}

@keyframes rn-orbit-move-2 {
    from { transform: translate(0, 0) scale(1.1); }
    to { transform: translate(-15%, -15%) scale(0.9); }
}

/* --- Default Gradients --- */
body {
    background-image: 
        radial-gradient(circle at 20% 30%, var(--rn-color-secondary-dim) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, var(--rn-color-primary-dim) 0%, transparent 40%);
}

/* ============================================================
   PART 3: GLOBAL TYPOGRAPHY
   ============================================================ */

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

img, svg {
    max-width: 100%;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: var(--rn-fw-bold);
    color: var(--rn-text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--rn-text-secondary);
    margin-bottom: var(--rn-space-sm);
    font-size: 1rem;
    line-height: 1.7;
}

/* --- Text Utilities --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--rn-text-primary); }
.text-secondary { color: var(--rn-text-secondary); }
.text-muted { color: var(--rn-text-muted); }
.text-dim { color: var(--rn-text-dim); }

.text-accent { color: var(--rn-color-primary); }
.text-success { color: var(--rn-color-success); }
.text-error { color: var(--rn-color-error); }
.text-warning { color: var(--rn-color-warning); }

.subtitle {
    display: block;
    font-size: var(--rn-size-sm);
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--rn-color-primary);
    margin-bottom: var(--rn-space-sm);
    font-weight: var(--rn-fw-semibold);
}

.accent {
    color: var(--rn-color-warning);
}

.accent-italic {
    font-family: var(--rn-font-serif);
    font-style: italic;
    color: var(--rn-color-primary);
    font-weight: var(--rn-fw-normal);
}

/* ============================================================
   PART 4: GLOBAL BUTTON SYSTEM
   ============================================================ */

.btn, button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--rn-space-sm) var(--rn-space-md);
    border-radius: var(--rn-radius-md);
    font-weight: var(--rn-fw-semibold);
    cursor: pointer;
    transition: all var(--rn-transition-default);
    border: 1px solid transparent;
    font-family: var(--rn-font-primary);
    font-size: var(--rn-size-base);
}

/* --- Primary Button --- */
.btn-primary {
    background: var(--rn-color-primary);
    color: #000;
    border: 1px solid var(--rn-color-primary);
    box-shadow: var(--rn-glow-cyan);
}

.btn-primary:hover {
    background: var(--rn-color-primary);
    transform: translateY(-2px);
    box-shadow: var(--rn-glow-cyan-intense);
    opacity: 0.9;
}

.btn-primary:active {
    transform: translateY(0);
}

/* --- Secondary Button --- */
.btn-secondary {
    background: transparent;
    color: var(--rn-color-primary);
    border: 1px solid var(--rn-color-primary);
    backdrop-filter: var(--rn-glass-blur);
}

.btn-secondary:hover {
    background: var(--rn-color-primary-dim);
    border-color: var(--rn-color-primary);
    box-shadow: var(--rn-glow-cyan);
    transform: translateY(-2px);
}

/* --- Outline Button --- */
.btn-outline {
    background: rgba(255, 255, 255, 0.03);
    color: var(--rn-text-primary);
    border: 1px solid var(--rn-border-default);
    backdrop-filter: var(--rn-glass-blur);
}

.btn-outline:hover {
    background: var(--rn-bg-hover);
    border-color: var(--rn-color-primary);
    color: var(--rn-color-primary);
    transform: translateY(-2px);
    box-shadow: var(--rn-glow-cyan);
}

/* --- Danger Button --- */
.btn-danger {
    background: var(--rn-color-error);
    color: #fff;
    border: 1px solid var(--rn-color-error);
    box-shadow: var(--rn-glow-crimson);
}

.btn-danger:hover {
    background: var(--rn-color-error);
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(255, 77, 77, 0.35);
    opacity: 0.9;
}

/* --- Success Button --- */
.btn-success {
    background: var(--rn-color-success);
    color: #fff;
    border: 1px solid var(--rn-color-success);
    box-shadow: var(--rn-glow-gold);
}

.btn-success:hover {
    background: var(--rn-color-success);
    transform: translateY(-2px);
    box-shadow: var(--rn-glow-gold);
    opacity: 0.9;
}

/* --- Button Sizes --- */
.btn.xs {
    padding: 0.5rem 1rem;
    font-size: var(--rn-size-xs);
    border-radius: var(--rn-radius-sm);
}

.btn.sm {
    padding: 0.6rem 1.2rem;
    font-size: var(--rn-size-sm);
    border-radius: var(--rn-radius-md);
}

.btn.lg {
    padding: 1rem 2rem;
    font-size: var(--rn-size-lg);
    border-radius: var(--rn-radius-lg);
}

.btn.xl {
    padding: 1.2rem 2.4rem;
    font-size: var(--rn-size-xl);
    border-radius: var(--rn-radius-xl);
}

/* --- Button Group Utilities --- */
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--rn-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================
   PART 5: GLOBAL CARD SYSTEM
   ============================================================ */

.card, .glass-card {
    background: var(--rn-bg-card);
    border: 1px solid var(--rn-border-default);
    border-radius: var(--rn-radius-xl);
    padding: var(--rn-space-lg);
    backdrop-filter: var(--rn-glass-blur);
    transition: all var(--rn-transition-default);
    box-shadow: var(--rn-shadow-sm);
}

.card:hover, .glass-card:hover {
    border-color: var(--rn-border-accent);
    background: var(--rn-bg-card);
    box-shadow: var(--rn-glow-cyan);
    transform: translateY(-4px);
}

/* --- Featured Card --- */
.card.featured, .glass-card.featured {
    border-top: 3px solid var(--rn-color-primary);
    background: rgba(0, 242, 255, 0.02);
}

/* --- Success Card --- */
.card.success {
    border-left: 4px solid var(--rn-color-success);
    background: var(--rn-color-success-dim);
}

/* --- Error Card --- */
.card.error {
    border-left: 4px solid var(--rn-color-error);
    background: var(--rn-color-error-dim);
}

/* --- Warning Card --- */
.card.warning {
    border-left: 4px solid var(--rn-color-warning);
    background: var(--rn-color-warning-dim);
}

/* ============================================================
   PART 6: GLOBAL INPUT SYSTEM
   ============================================================ */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="number"],
input[type="search"],
textarea,
select,
.form-control,
.form-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--rn-border-default);
    border-radius: var(--rn-radius-md);
    padding: var(--rn-space-sm) var(--rn-space-md);
    color: var(--rn-text-primary);
    font-family: var(--rn-font-primary);
    font-size: var(--rn-size-base);
    transition: all var(--rn-transition-default);
    backdrop-filter: var(--rn-glass-blur);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus,
.form-control:focus,
.form-input:focus {
    outline: none;
    border-color: var(--rn-color-primary);
    background: rgba(0, 242, 255, 0.05);
    box-shadow: var(--rn-glow-cyan);
}

textarea,
.textarea {
    resize: vertical;
    min-height: 100px;
}

/* --- Input Label --- */
label,
.input-label,
.form-label {
    display: block;
    margin-bottom: var(--rn-space-xs);
    color: var(--rn-text-muted);
    font-size: var(--rn-size-sm);
    font-weight: var(--rn-fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Input Group --- */
.input-group,
.form-group {
    margin-bottom: var(--rn-space-lg);
}

.input-group.error input,
.form-group.error input,
.input-group.error textarea,
.form-group.error textarea {
    border-color: var(--rn-color-error);
    background: var(--rn-color-error-dim);
}

.input-group.success input,
.form-group.success input {
    border-color: var(--rn-color-success);
    background: var(--rn-color-success-dim);
}

/* --- Checkbox & Radio --- */
input[type="checkbox"],
input[type="radio"] {
    margin-right: var(--rn-space-xs);
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
    accent-color: var(--rn-color-primary);
}

/* --- Toggle Switch --- */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--rn-border-default);
    transition: var(--rn-transition-default);
    border-radius: 28px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 3px;
    bottom: 3px;
    background-color: #fff;
    transition: var(--rn-transition-default);
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--rn-color-primary);
    box-shadow: var(--rn-glow-cyan);
}

input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

/* ============================================================
   PART 7: GLOBAL MODAL SYSTEM
   ============================================================ */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: var(--rn-glass-backdrop);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--rn-space-md);
    animation: rn-fade-in var(--rn-transition-default);
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--rn-bg-overlay);
    border: 1px solid var(--rn-border-default);
    border-radius: var(--rn-radius-3xl);
    padding: var(--rn-space-xl);
    box-shadow: var(--rn-shadow-xl);
    max-width: 600px;
    width: 100%;
    animation: rn-slide-up var(--rn-transition-ui);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    border-bottom: 1px solid var(--rn-border-light);
    padding-bottom: var(--rn-space-lg);
    margin-bottom: var(--rn-space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: var(--rn-size-2xl);
    background: linear-gradient(to right, var(--rn-text-primary), var(--rn-color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--rn-text-muted);
    font-size: var(--rn-size-xl);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--rn-transition-default);
}

.modal-close:hover {
    color: var(--rn-color-primary);
    transform: scale(1.1);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--rn-space-md);
    margin-top: var(--rn-space-xl);
    padding-top: var(--rn-space-lg);
    border-top: 1px solid var(--rn-border-light);
}

/* ============================================================
   PART 8: GLOBAL STATUS BADGES
   ============================================================ */

.badge,
.status-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: var(--rn-radius-full);
    font-size: var(--rn-size-xs);
    font-weight: var(--rn-fw-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.badge-primary {
    background: var(--rn-color-primary-dim);
    color: var(--rn-color-primary);
    border: 1px solid var(--rn-color-primary);
    box-shadow: var(--rn-glow-cyan);
}

.badge-success {
    background: var(--rn-color-success-dim);
    color: var(--rn-color-success);
    border: 1px solid var(--rn-color-success);
    box-shadow: var(--rn-glow-gold);
}

.badge-error {
    background: var(--rn-color-error-dim);
    color: var(--rn-color-error);
    border: 1px solid var(--rn-color-error);
    box-shadow: var(--rn-glow-crimson);
}

.badge-warning {
    background: var(--rn-color-warning-dim);
    color: var(--rn-color-warning);
    border: 1px solid var(--rn-color-warning);
    box-shadow: var(--rn-glow-gold);
}

.badge-secondary {
    background: var(--rn-color-secondary-dim);
    color: var(--rn-color-secondary);
    border: 1px solid var(--rn-color-secondary);
    box-shadow: var(--rn-glow-violet);
}

/* --- Status-specific Badges --- */
.badge-live, .status-live {
    background: var(--rn-color-success-dim);
    color: var(--rn-color-success);
    border: 1px solid var(--rn-color-success);
}

.badge-draft, .status-draft {
    background: var(--rn-border-light);
    color: var(--rn-text-muted);
}

.badge-featured, .status-featured {
    background: var(--rn-color-primary-dim);
    color: var(--rn-color-primary);
}

.badge-present, .status-present {
    background: var(--rn-color-success-dim);
    color: var(--rn-color-success);
}

.badge-absent, .status-absent {
    background: var(--rn-color-error-dim);
    color: var(--rn-color-error);
}

.badge-upcoming {
    background: var(--rn-color-warning-dim);
    color: var(--rn-color-warning);
}

/* ============================================================
   PART 9: GLOBAL ANIMATIONS
   ============================================================ */

@keyframes rn-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes rn-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes rn-slide-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes rn-slide-down {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes rn-slide-left {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes rn-slide-right {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes rn-scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rn-glow-pulse {
    0%, 100% {
        box-shadow: var(--rn-glow-cyan);
    }
    50% {
        box-shadow: var(--rn-glow-cyan-intense);
    }
}

@keyframes rn-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes rn-shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* --- Animation Utilities --- */
.animate-fade-in { animation: rn-fade-in var(--rn-transition-default); }
.animate-slide-up { animation: rn-slide-up var(--rn-transition-ui); }
.animate-slide-down { animation: rn-slide-down var(--rn-transition-ui); }
.animate-scale-in { animation: rn-scale-in var(--rn-transition-default); }
.animate-float { animation: rn-float 3s ease-in-out infinite; }
.animate-pulse { animation: rn-glow-pulse 2s ease-in-out infinite; }

/* ============================================================
   PART 10: GLOBAL UTILITIES & HELPERS
   ============================================================ */

/* --- Display Utilities --- */
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-none { display: none; }

.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; }
.flex-wrap { flex-wrap: wrap; }
.flex-gap-sm { gap: var(--rn-space-sm); }
.flex-gap-md { gap: var(--rn-space-md); }
.flex-gap-lg { gap: var(--rn-space-lg); }

/* --- Spacing Utilities --- */
.m-0 { margin: 0; }
.m-xs { margin: var(--rn-space-xs); }
.m-sm { margin: var(--rn-space-sm); }
.m-md { margin: var(--rn-space-md); }
.m-lg { margin: var(--rn-space-lg); }
.m-xl { margin: var(--rn-space-xl); }

.mt-xs { margin-top: var(--rn-space-xs); }
.mt-sm { margin-top: var(--rn-space-sm); }
.mt-md { margin-top: var(--rn-space-md); }
.mt-lg { margin-top: var(--rn-space-lg); }

.mb-xs { margin-bottom: var(--rn-space-xs); }
.mb-sm { margin-bottom: var(--rn-space-sm); }
.mb-md { margin-bottom: var(--rn-space-md); }
.mb-lg { margin-bottom: var(--rn-space-lg); }

.p-0 { padding: 0; }
.p-xs { padding: var(--rn-space-xs); }
.p-sm { padding: var(--rn-space-sm); }
.p-md { padding: var(--rn-space-md); }
.p-lg { padding: var(--rn-space-lg); }

/* --- Width/Height Utilities --- */
.w-100 { width: 100%; }
.h-100 { height: 100%; }
.w-auto { width: auto; }
.h-auto { height: auto; }

/* --- Border Utilities --- */
.border-none { border: none; }
.border-light { border: 1px solid var(--rn-border-light); }
.border-default { border: 1px solid var(--rn-border-default); }
.border-accent { border: 1px solid var(--rn-color-primary); }

.rounded-sm { border-radius: var(--rn-radius-sm); }
.rounded-md { border-radius: var(--rn-radius-md); }
.rounded-lg { border-radius: var(--rn-radius-lg); }
.rounded-xl { border-radius: var(--rn-radius-xl); }
.rounded-full { border-radius: var(--rn-radius-full); }

/* --- Shadow Utilities --- */
.shadow-sm { box-shadow: var(--rn-shadow-sm); }
.shadow-md { box-shadow: var(--rn-shadow-md); }
.shadow-lg { box-shadow: var(--rn-shadow-lg); }
.shadow-xl { box-shadow: var(--rn-shadow-xl); }

.glow-cyan { box-shadow: var(--rn-glow-cyan); }
.glow-cyan-intense { box-shadow: var(--rn-glow-cyan-intense); }
.glow-violet { box-shadow: var(--rn-glow-violet); }
.glow-gold { box-shadow: var(--rn-glow-gold); }

/* --- Background Utilities --- */
.bg-transparent { background: transparent; }
.bg-dark { background: var(--rn-bg-dark); }
.bg-card { background: var(--rn-bg-card); }
.bg-overlay { background: var(--rn-bg-overlay); }

/* --- Layout Container --- */
.container {
    width: 100%;
    padding: 0 var(--rn-space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1400px;
}

/* --- Section Utilities --- */
.section {
    padding: clamp(3rem, 10vw, 6rem) 0;
}

.section-small {
    padding: 2rem 0;
}

.section-large {
    padding: 8rem 0;
}

/* --- Grid --- */
.grid {
    display: grid;
    gap: var(--rn-space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   PART 11: GLOBAL SCROLLBAR STYLING
   ============================================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--rn-color-primary), var(--rn-color-secondary));
    border-radius: 5px;
    border: 2px solid var(--rn-bg-dark);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--rn-color-primary), var(--rn-color-secondary));
    box-shadow: var(--rn-glow-cyan);
}

/* Firefox */
* {
    scrollbar-color: var(--rn-color-primary) var(--rn-bg-dark);
    scrollbar-width: thin;
}

/* ============================================================
   PART 12: GLOBAL RESPONSIVE DESIGN
   ============================================================ */

/* --- Mobile First Approach --- */
@media (max-width: 640px) {
    :root {
        font-size: 14px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 var(--rn-space-sm);
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .modal-content {
        padding: var(--rn-space-lg);
        border-radius: var(--rn-radius-2xl);
    }
    
    .btn {
        width: 100%;
    }
}

/* --- Tablet --- */
@media (min-width: 641px) and (max-width: 1024px) {
    :root {
        font-size: 15px;
    }
    
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* --- Desktop --- */
@media (min-width: 1025px) {
    :root {
        font-size: 16px;
    }
}

/* --- Large Desktop --- */
@media (min-width: 1441px) {
    .container-max {
        max-width: 1600px;
    }
}

/* ============================================================
   PART 13: ACCESSIBILITY & MOTION
   ============================================================ */

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: more) {
    :root {
        --rn-border-default: rgba(255, 255, 255, 0.2);
        --rn-border-accent: var(--rn-color-primary);
    }
    
    .card, .glass-card {
        border-width: 2px;
    }
    
    button {
        border-width: 2px;
    }
}

/* ============================================================
   PART 14: BROWSER COMPATIBILITY
   ============================================================ */

/* Fallback for browsers without backdrop-filter */
@supports not (backdrop-filter: blur(10px)) {
    body::before,
    body::after {
        filter: blur(80px);
    }
}

/* ============================================================
   PART 15: PERFORMANCE OPTIMIZATION
   ============================================================ */

/* Optimize animations for performance */
.card, .glass-card, button, a {
    will-change: auto;
}

.card:hover, .glass-card:hover, button:hover {
    will-change: transform, box-shadow;
}

/* GPU acceleration for animations */
.animate-fade-in,
.animate-slide-up,
.animate-scale-in {
    transform: translateZ(0);
}

/* ============================================================
   END OF GLOBAL THEME SYSTEM
   ============================================================ */