/* ═══════════════════════════════════════════════════════
   DRAVYA STUDIO — Premium Design System
   Photography Studio Management
   ═══════════════════════════════════════════════════════ */

:root {
    /* Brand Gradients */
    --gradient-primary: linear-gradient(135deg, #c8832a 0%, #a06820 100%);
    --gradient-secondary: linear-gradient(135deg, #e8a040 0%, #c8832a 100%);
    --gradient-gold: linear-gradient(135deg, #f0c060 0%, #c8832a 100%);
    --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --color-primary: #c8832a;
    --color-primary-dark: #a06820;
    --color-secondary: #e8a040;
    --color-background: #f5f0e8;
    --color-surface: #ffffff;
    --color-surface-hover: #fdf8f0;
    --color-text: #1a1a1a;
    --color-text-secondary: #2d2d2d;
    --color-text-muted: #6b6b6b;
    --color-border: rgba(200, 131, 42, 0.15);
    --color-border-hover: rgba(200, 131, 42, 0.35);
    --shadow-glow: 0 0 20px rgba(200, 131, 42, 0.35);
    --shadow-glow-gold: 0 0 20px rgba(200, 131, 42, 0.45);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(30, 60%, 92%, 0.5) 0px,
            transparent 50%),
        radial-gradient(at 80% 0%, hsla(35, 50%, 88%, 0.3) 0px,
            transparent 50%),
        radial-gradient(at 0% 50%, hsla(25, 40%, 90%, 0.3) 0px,
            transparent 50%);
    --color-surface-2: #faf8ff;
    --color-surface-hover: #fdf8f0;
    --color-text: #1a1a1a;
    --color-text-secondary: #2d2d2d;
    --color-text-muted: #6b6b6b;
    --color-text-light: #b8b8d0;
    --color-border: rgba(200, 131, 42, 0.15);
    --color-border-hover: rgba(200, 131, 42, 0.35);
    --color-success: #0d9f6e;
    --color-success-bg: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-bg: #fffbeb;
    --color-error: #dc2626;
    --color-error-bg: #fef2f2;
    --color-info: #2563eb;
    --color-info-bg: #eff6ff;
    --color-on-primary: #ffffff;
    --color-on-secondary: #ffffff;

    /* Typography */
    --font-family-base: 'Segoe UI', -apple-system, BlinkMacSystemFont,
        'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 22px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --border-radius-sm: 6px;
    --border-radius-base: 10px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(200, 131, 42, 0.06);
    --shadow-sm: 0 2px 8px rgba(200, 131, 42, 0.10);
    --shadow-md: 0 4px 20px rgba(200, 131, 42, 0.15);
    --shadow-lg: 0 8px 32px rgba(200, 131, 42, 0.20);
    --shadow-xl: 0 16px 48px rgba(200, 131, 42, 0.25);
    --shadow-glow: 0 0 20px rgba(200, 131, 42, 0.35);
    --shadow-glow-gold: 0 0 20px rgba(200, 131, 42, 0.45);

    /* Layout */
    --nav-width: 260px;
    --header-height: 64px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-background);
    background-image: var(--gradient-mesh);
    background-attachment: fixed;
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* DARK MODE */
body {
    transition: background-color var(--transition-base), color var(--transition-base), background-image var(--transition-base);
}

.card, .topbar, .sidebar, .sidebar__logo, .sidebar__link, .main-wrapper, .table-wrapper, 
.form-group input, .form-group select, .form-group textarea, .btn {
    transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base), width var(--transition-base), margin var(--transition-base);
}

body.dark-mode {
    --color-background: #1a1a1a;
    --color-surface: #2d2d2d;
    --color-surface-hover: #383838;
    --color-text: #f0f0f0;
    --color-text-secondary: #d0d0d0;
    --color-text-muted: #a0a0a0;
    --color-border: rgba(200, 131, 42, 0.25);
    --color-border-hover: rgba(200, 131, 42, 0.45);
    --gradient-mesh: radial-gradient(at 40% 20%, hsla(30, 30%, 15%, 0.8) 0px,
            transparent 50%),
        radial-gradient(at 80% 0%, hsla(35, 25%, 12%, 0.6) 0px,
            transparent 50%);
}

body.dark-mode .card {
    background: rgba(45, 45, 45, 0.95);
    border-color: rgba(200, 131, 42, 0.20);
}

body.dark-mode .topbar {
    background: rgba(26, 26, 26, 0.95);
    border-bottom-color: rgba(200, 131, 42, 0.20);
}

body.dark-mode table {
    background: #2d2d2d;
}

body.dark-mode td {
    color: #e0e0e0;
    border-bottom-color: rgba(200, 131, 42, 0.10);
}

body.dark-mode .table-wrapper {
    background: #2d2d2d;
    border-color: rgba(200, 131, 42, 0.20);
}

body.dark-mode .form-group input,
body.dark-mode .form-group select,
body.dark-mode .form-group textarea {
    background: #383838;
    color: #f0f0f0;
    border-color: rgba(200, 131, 42, 0.25);
}

/* Login Card Dark Mode */
body.dark-mode .login-card {
    background: rgba(45, 45, 45, 0.95) !important;
    border-color: rgba(200, 131, 42, 0.20) !important;
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.50), 0 4px 16px rgba(0, 0, 0, 0.30) !important;
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #121212;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-gold);
    border-radius: var(--border-radius-full);
}

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

/* ── Typography ── */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    line-height: 1.3;
}

h1 {
    font-size: var(--font-size-2xl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

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

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

p {
    margin-bottom: var(--spacing-sm);
}

/* ── Selection ── */
::selection {
    background: rgba(200, 131, 42, 0.30);
    color: var(--color-text);
}

/* Spinner Animation */
.spinner {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s linear infinite;
}

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

/* ── Form Errors & Alerts ── */
.form-error { color: var(--color-error); font-size: 11px; font-weight: 500; margin-top: 4px; display: block; animation: fadeIn 0.3s ease; }
.alert { padding: 12px 16px; border-radius: var(--border-radius-base); margin-bottom: var(--spacing-lg); font-weight: 500; animation: slideDown 0.3s ease; }
.alert--error { background: var(--color-error-bg); color: var(--color-error); border: 1px solid rgba(220, 38, 38, 0.2); }
.alert--success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid rgba(13, 159, 110, 0.2); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideDown { from { transform: translateY(-10px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }