/* ============================================
   MODERN UI FRAMEWORK - Mobile First Design
   ============================================ */

:root {
    /* Luxury Color System - Premium Palette */
    --primary: #6366f1; /* Indigo - Premium */
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6; /* Purple - Luxury */
    --secondary-dark: #7c3aed;
    --secondary-light: #a78bfa;
    
    /* Accent Colors - Gold & Platinum */
    --accent-gold: #f59e0b;
    --accent-platinum: #e5e7eb;
    --accent-rose: #f43f5e;
    
    --success: #10b981; /* Emerald */
    --success-dark: #059669;
    --warning: #f59e0b; /* Amber */
    --warning-dark: #d97706;
    --danger: #ef4444; /* Red */
    --danger-dark: #dc2626;
    --info: #3b82f6; /* Blue */
    --info-dark: #2563eb;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-inverse: #ffffff;
    
    /* Background Colors - Luxury Gradients */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-dark: var(--gray-900);
    --bg-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --bg-gradient-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    --bg-gradient-dark: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography */
    --font-family: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Border & Radius */
    --border-width: 1px;
    --border-width-thick: 2px;
    --border-color: var(--gray-200);
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    --border-radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Layout */
    --container-max-width: 1200px;
    --sidebar-width: 280px;
    --header-height: 64px;
    
    /* Breakpoints (for JS) */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    direction: rtl;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

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

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

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
    touch-action: manipulation;
    -webkit-appearance: none;
    appearance: none;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

        .btn-primary {
            background: var(--bg-gradient);
            color: var(--text-inverse);
            border-color: transparent;
            box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s;
        }

        .btn-primary:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
        }

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

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--gray-600);
    color: var(--text-inverse);
    border-color: var(--gray-600);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--gray-700);
    border-color: var(--gray-700);
}

.btn-success {
    background-color: var(--success);
    color: var(--text-inverse);
    border-color: var(--success);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--success-dark);
    border-color: var(--success-dark);
}

.btn-danger {
    background-color: var(--danger);
    color: var(--text-inverse);
    border-color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--danger-dark);
    border-color: var(--danger-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--primary);
    color: var(--text-inverse);
}

.btn-sm {
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-icon {
    padding: var(--space-md);
    width: auto;
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--space-lg);
}

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

.form-control {
    display: block;
    width: 100%;
    padding: var(--space-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: var(--border-width-thick) solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    -webkit-appearance: none;
    appearance: none;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

.form-control:disabled {
    background-color: var(--gray-100);
    opacity: 0.6;
    cursor: not-allowed;
}

.input-group {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    width: 100%;
}

.input-group-prepend,
.input-group-append {
    display: flex;
    align-items: center;
}

.input-group-prepend .input-group-text,
.input-group-append .input-group-text {
    padding: var(--space-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1;
    color: var(--text-secondary);
    text-align: center;
    white-space: nowrap;
    background-color: var(--gray-100);
    border: var(--border-width-thick) solid var(--border-color);
}

.input-group-prepend {
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

.input-group-prepend .input-group-text {
    border-left: none;
}

.input-group .form-control {
    position: relative;
    flex: 1 1 auto;
    width: 1%;
    min-width: 0;
}

.input-group-prepend + .form-control {
    border-right: none;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}

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

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-valid {
    border-color: var(--success);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--bg-primary);
    background-clip: border-box;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--space-lg);
    background-color: var(--bg-secondary);
    border-bottom: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    font-weight: var(--font-weight-semibold);
}

.card-body {
    flex: 1 1 auto;
    padding: var(--space-lg);
}

.card-footer {
    padding: var(--space-lg);
    background-color: var(--bg-secondary);
    border-top: var(--border-width) solid var(--border-color);
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    position: relative;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    border: var(--border-width) solid transparent;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.alert-success {
    color: var(--success-dark);
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
}

.alert-danger {
    color: var(--danger-dark);
    background-color: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-warning {
    color: var(--warning-dark);
    background-color: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.2);
}

.alert-info {
    color: var(--info-dark);
    background-color: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
}

/* ============================================
   MODAL
   ============================================ */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-modal-backdrop);
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-modal);
    display: none;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    outline: 0;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: var(--space-lg);
    pointer-events: none;
    max-width: 500px;
    width: 100%;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: var(--bg-primary);
    background-clip: padding-box;
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-2xl);
    outline: 0;
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--space-xl);
    border-bottom: var(--border-width) solid var(--border-color);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.modal-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: var(--space-xl);
}

.modal-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    padding: var(--space-xl);
    border-top: var(--border-width) solid var(--border-color);
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
    gap: var(--space-md);
}

/* ============================================
   LOADING & SPINNERS
   ============================================ */

.spinner {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-rotate 0.75s linear infinite;
}

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

.spinner-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

.spinner-lg {
    width: 2rem;
    height: 2rem;
    border-width: 0.3em;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    width: 100vw;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
}

.loading-overlay.show {
    display: flex;
}

/* ============================================
   UTILITIES
   ============================================ */

.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

@media (min-width: 640px) {
    .container { max-width: 640px; }
}

@media (min-width: 768px) {
    .container { max-width: 768px; }
}

@media (min-width: 1024px) {
    .container { max-width: 1024px; }
}

@media (min-width: 1280px) {
    .container { max-width: var(--container-max-width); }
}

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

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }
.p-5 { padding: var(--space-xl); }

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 767px) {
    .d-md-none { display: none; }
    .d-md-block { display: block; }
    .d-md-flex { display: flex; }
}

@media (min-width: 768px) {
    .d-md-none { display: none; }
    .d-md-block { display: block; }
    .d-md-flex { display: flex; }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.animate-slide-up {
    animation: slideUp var(--transition-base);
}

.animate-slide-down {
    animation: slideDown var(--transition-base);
}

.animate-scale-in {
    animation: scaleIn var(--transition-base);
}

/* ============================================
   MOBILE OPTIMIZATIONS
   ============================================ */

@media (max-width: 767px) {
    :root {
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }
    
    .btn {
        padding: var(--space-md) var(--space-lg);
        min-height: 44px; /* Touch target size */
    }
    
    .card {
        border-radius: var(--border-radius-lg);
    }
    
    .modal-dialog {
        margin: var(--space-md);
        max-width: calc(100% - 2rem);
    }
    
    .container {
        padding-left: var(--space-md);
        padding-right: var(--space-md);
    }
}

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

@media print {
    .btn,
    .modal,
    .loading-overlay {
        display: none !important;
    }
    
    body {
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}