/* ============================================
   SAIGON OI - ELEGANT DESIGN SYSTEM
   ============================================ */

/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ===== ROOT VARIABLES ===== */
:root {
    /* Primary Colors */
    --color-primary: #C41E3A;
    --color-primary-light: #e74c6f;
    --color-primary-dark: #a0182f;
    --color-primary-gradient: linear-gradient(135deg, #C41E3A, #a0182f);
    
    /* Secondary Colors */
    --color-gold: #D4AF37;
    --color-gold-light: #e8d5a3;
    --color-gold-dark: #b8962e;
    --color-gold-gradient: linear-gradient(135deg, #D4AF37, #b8962e);
    
    /* Accent Colors */
    --color-rainbow: linear-gradient(135deg, #ffb3ba 0%, #ffdfba 20%, #ffffba 40%, #baffc9 60%, #bae1ff 80%, #e8baff 100%);
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-bg: #f0f0f5;
    --color-surface: #ffffff;
    --color-surface-dark: #f8f8fc;
    
    /* Text */
    --color-text: #1a1a2e;
    --color-text-secondary: #6b6b7a;
    --color-text-muted: #a0a0b0;
    --color-text-inverse: #ffffff;
    
    /* Borders */
    --color-border: #e8e8f0;
    --color-border-light: #f0f0f5;
    --color-border-dark: #d0d0dd;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 60px rgba(0,0,0,0.10);
    --shadow-glow: 0 0 40px rgba(196, 30, 58, 0.08);
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-xxxl: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --font-size-4xl: 48px;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Glass */
    --glass-bg: rgba(255,255,255,0.7);
    --glass-border: rgba(255,255,255,0.2);
    --glass-shadow: 0 8px 32px rgba(0,0,0,0.06);
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--color-border-light);
}
::-webkit-scrollbar-thumb {
    background: var(--color-text-muted);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ===== SELECTION ===== */
::selection {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

/* ===== CONTAINERS ===== */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.container-wide {
    max-width: 1024px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.container-full {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-lg);
}

/* ===== HEADER ===== */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0 var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.app-header .logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.app-header .logo-icon {
    font-size: 28px;
    display: inline-block;
}

.app-header .logo-text {
    font-size: var(--font-size-xl);
    font-weight: 800;
    letter-spacing: -0.5px;
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-header .logo-text span {
    background: var(--color-gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-header .header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ===== RAINBOW BAR ===== */
.rainbow-bar {
    width: 100%;
    height: 3px;
    background: var(--color-rainbow);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 4px var(--space-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.badge-verified {
    background: rgba(46, 204, 113, 0.12);
    color: #27ae60;
}

.badge-escort {
    background: rgba(212, 168, 55, 0.12);
    color: #b7950b;
}

.badge-male {
    background: rgba(196, 30, 58, 0.08);
    color: var(--color-primary);
}

.badge-premium {
    background: var(--color-gold-gradient);
    color: var(--color-text-inverse);
}

.badge-pending {
    background: rgba(243, 156, 18, 0.12);
    color: #b7950b;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    border: none;
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--color-primary-gradient);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 16px rgba(196, 30, 58, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(196, 30, 58, 0.3);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border-light);
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--color-gold-gradient);
    color: var(--color-text-inverse);
    box-shadow: 0 4px 16px rgba(212, 175, 55, 0.2);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(212, 175, 55, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
    background: var(--color-border-light);
    border-color: var(--color-text-secondary);
    transform: translateY(-2px);
}

.btn-danger {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid rgba(196, 30, 58, 0.2);
}

.btn-danger:hover {
    background: rgba(196, 30, 58, 0.06);
    border-color: var(--color-primary);
}

.btn-success {
    background: #27ae60;
    color: var(--color-text-inverse);
}

.btn-success:hover {
    background: #1e8449;
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(46, 204, 113, 0.3);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 6px var(--space-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 14px var(--space-xl);
    font-size: var(--font-size-base);
}

.btn-icon {
    padding: 10px;
    border-radius: var(--radius-full);
    aspect-ratio: 1;
}

/* ===== CARDS ===== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.card-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--glass-shadow);
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.card-title i {
    color: var(--color-gold);
    margin-right: var(--space-sm);
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.form-label .required {
    color: var(--color-primary);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 10px var(--space-md);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-white);
    transition: var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.08);
}

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

.form-control:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b6b7a' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* ===== GRID ===== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-md);
    display: none;
    border-left: 4px solid transparent;
}

.alert.show {
    display: block;
}

.alert-success {
    background: rgba(46, 204, 113, 0.08);
    border-left-color: #2ecc71;
    color: #1e7e34;
}

.alert-error {
    background: rgba(196, 30, 58, 0.06);
    border-left-color: var(--color-primary);
    color: var(--color-primary);
}

.alert-info {
    background: rgba(52, 152, 219, 0.06);
    border-left-color: #3498db;
    color: #2471a3;
}

.alert-warning {
    background: rgba(241, 196, 15, 0.08);
    border-left-color: #f1c40f;
    color: #b7950b;
}

/* ===== TOAST ===== */
.toast-container {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
    pointer-events: none;
}

.toast {
    padding: 12px 24px;
    background: var(--color-text);
    color: var(--color-text-inverse);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 3.7s forwards;
    max-width: 90%;
    text-align: center;
}

.toast-success {
    background: #27ae60;
}

.toast-error {
    background: var(--color-primary);
}

.toast-info {
    background: #3498db;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(20px); }
}

/* ===== LOADING ===== */
.loading-spinner {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .container { padding: var(--space-md); }
    .container-wide { padding: var(--space-md); }
    .container-full { padding: var(--space-md); }
    
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
    
    .app-header { flex-wrap: wrap; gap: var(--space-sm); }
    .app-header .logo-text { font-size: var(--font-size-lg); }
}

@media (max-width: 480px) {
    .container { padding: var(--space-sm); }
    .container-wide { padding: var(--space-sm); }
    .container-full { padding: var(--space-sm); }
    
    .card { padding: var(--space-md); }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-4 { grid-template-columns: 1fr 1fr; }
}

/* ===== UTILITY ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-secondary); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-primary { color: var(--color-primary); }
.text-gold { color: var(--color-gold); }

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.hidden { display: none !important; }
.relative { position: relative; }

/* ===== DARK MODE ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg: #0d0d14;
        --color-surface: #161620;
        --color-surface-dark: #1a1a28;
        --color-text: #ffffff;
        --color-text-secondary: #8e8e98;
        --color-text-muted: #6b6b7a;
        --color-border: #2c2c3e;
        --color-border-light: #222234;
        --color-border-dark: #333344;
        --glass-bg: rgba(22, 22, 32, 0.7);
        --glass-border: rgba(255,255,255,0.05);
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
        --shadow-md: 0 4px 20px rgba(0,0,0,0.3);
        --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
        --shadow-xl: 0 16px 60px rgba(0,0,0,0.5);
        --shadow-glow: 0 0 40px rgba(196, 30, 58, 0.12);
    }
}