/* ============================================
   🎨 MODERN DESIGN SYSTEM CSS
   Save as: public/css/modern-design-system.css
   ============================================ */

/* Import Inter font for better typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================
   📐 CSS VARIABLES - DESIGN SYSTEM FOUNDATION
   ============================================ */
:root {
    /* 🔵 Primary Color Palette */
    --primary-dark-teal: #063445;
    --primary-teal-light: #0a4a5c;
    --primary-teal-hover: #0d5d73;
    --primary-teal-active: #154d5f;

    /* 🔹 Secondary Colors */
    --secondary-muted-blue: #95acb8;
    --secondary-blue-light: #a8bac4;
    --secondary-blue-dark: #7a8c96;
    --secondary-blue-hover: #839ba6;

    /* 🎨 Background Colors */
    --background-main: #f3f3fa;
    --background-card: #ffffff;
    --background-input: #fafbfc;
    --background-hover: #f8f9fc;
    --background-active: #f1f3f7;

    /* 📝 Text Colors */
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-muted: #7a8999;
    --text-light: #95a5a6;
    --text-white: #ffffff;

    /* 🔲 Border Colors */
    --border-light: #e1e8ed;
    --border-medium: #d0dae2;
    --border-dark: #bdc3c7;
    --border-focus: #3498db;

    /* 🎯 Status Colors */
    --success: #27ae60;
    --success-light: #2ecc71;
    --success-dark: #229954;
    --warning: #f39c12;
    --warning-light: #f1c40f;
    --warning-dark: #e67e22;
    --danger: #e74c3c;
    --danger-light: #ec7063;
    --danger-dark: #c0392b;
    --info: #3498db;
    --info-light: #5dade2;
    --info-dark: #2980b9;

    /* 📝 Typography System */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Font Sizes - Modular Scale */
    --font-size-xs: 0.75rem;     /* 12px */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 1.875rem;   /* 30px */
    --font-size-4xl: 2.25rem;    /* 36px */
    --font-size-5xl: 3rem;       /* 48px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* 📏 Spacing Scale - Based on 4px grid */
    --spacing-0: 0;
    --spacing-px: 1px;
    --spacing-0_5: 0.125rem;     /* 2px */
    --spacing-1: 0.25rem;        /* 4px */
    --spacing-2: 0.5rem;         /* 8px */
    --spacing-3: 0.75rem;        /* 12px */
    --spacing-4: 1rem;           /* 16px */
    --spacing-5: 1.25rem;        /* 20px */
    --spacing-6: 1.5rem;         /* 24px */
    --spacing-8: 2rem;           /* 32px */
    --spacing-10: 2.5rem;        /* 40px */
    --spacing-12: 3rem;          /* 48px */
    --spacing-16: 4rem;          /* 64px */
    --spacing-20: 5rem;          /* 80px */
    --spacing-24: 6rem;          /* 96px */

    /* Legacy spacing aliases for easier migration */
    --spacing-xs: var(--spacing-1);   /* 4px */
    --spacing-sm: var(--spacing-2);   /* 8px */
    --spacing-md: var(--spacing-4);   /* 16px */
    --spacing-lg: var(--spacing-6);   /* 24px */
    --spacing-xl: var(--spacing-8);   /* 32px */
    --spacing-2xl: var(--spacing-12); /* 48px */
    --spacing-3xl: var(--spacing-16); /* 64px */

    /* 🎯 Border Radius */
    --radius-none: 0;
    --radius-sm: 0.125rem;       /* 2px */
    --radius-base: 0.25rem;      /* 4px */
    --radius-md: 0.375rem;       /* 6px */
    --radius-lg: 0.5rem;         /* 8px */
    --radius-xl: 0.75rem;        /* 12px */
    --radius-2xl: 1rem;          /* 16px */
    --radius-3xl: 1.5rem;        /* 24px */
    --radius-full: 9999px;       /* Full round */

    /* 🌊 Box Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(6, 52, 69, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(6, 52, 69, 0.1), 0 1px 2px 0 rgba(6, 52, 69, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(6, 52, 69, 0.1), 0 2px 4px -1px rgba(6, 52, 69, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(6, 52, 69, 0.1), 0 4px 6px -2px rgba(6, 52, 69, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(6, 52, 69, 0.1), 0 10px 10px -5px rgba(6, 52, 69, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(6, 52, 69, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(6, 52, 69, 0.06);
    --shadow-outline: 0 0 0 3px rgba(6, 52, 69, 0.1);

    /* 🔄 Transitions */
    --transition-none: none;
    --transition-all: all 150ms ease-in-out;
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    --transition-slower: 500ms ease-in-out;

    /* 📐 Layout */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1536px;
}

/* ============================================
   🏗️ RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    line-height: var(--line-height-normal);
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
}

body {
    font-family: var(--font-family-primary);
    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(--background-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ============================================
   📝 TYPOGRAPHY SYSTEM
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-primary);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin: 0;
}

.text-h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--primary-dark-teal);
    margin-bottom: var(--spacing-lg);
}

.text-h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--primary-dark-teal);
    margin-bottom: var(--spacing-md);
}

.text-h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.text-h4 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.text-body {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
}

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

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

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

.text-small {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

.text-xs {
    font-size: var(--font-size-xs);
    line-height: var(--line-height-normal);
}

.text-lg {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
}

/* Font weights */
.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

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

/* ============================================
   📊 TABLE SYSTEM
   ============================================ */
.table-modern {
    width: 100%;
    border-collapse: collapse;
    background: var(--background-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-base);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* Override any possible gradient backgrounds on thead */
.table-modern thead,
.table-modern thead th {
    background: var(--border-light) !important;
    background-image: none !important;
}

/* Table wrapper for responsive scrolling */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    background: var(--background-card);
    margin-bottom: var(--spacing-lg);
}

.table-wrapper .table-modern {
    box-shadow: none;
    margin-bottom: 0;
}

/* Table header */
.table-modern thead {
    background: var(--border-light) !important;
    border-bottom: 2px solid var(--border-medium);
}

/* Force light background for thead */
.table-modern thead,
.table-wrapper .table-modern thead,
.modern-card .table-modern thead {
    background: var(--border-light) !important;
    background-image: none !important;
}

.table-modern thead th {
    padding: var(--spacing-4) var(--spacing-5);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    color: var(--text-primary) !important;
    text-align: left;
    border: none;
    white-space: nowrap;
    position: relative;
    background: inherit;
}

.table-modern thead th:first-child {
    border-top-left-radius: var(--radius-lg);
}

.table-modern thead th:last-child {
    border-top-right-radius: var(--radius-lg);
}

/* Sortable headers */
.table-modern thead th.sortable {
    cursor: pointer;
    user-select: none;
    transition: background-color var(--transition-fast);
}

.table-modern thead th.sortable:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.table-modern thead th.sortable::after {
    content: '↕';
    opacity: 0.5;
    margin-left: var(--spacing-2);
    font-size: var(--font-size-xs);
}

.table-modern thead th.sortable.asc::after {
    content: '↑';
    opacity: 1;
}

.table-modern thead th.sortable.desc::after {
    content: '↓';
    opacity: 1;
}

/* Table body */
.table-modern tbody tr {
    transition: background-color var(--transition-fast);
    border-bottom: 1px solid var(--border-light);
}

.table-modern tbody tr:hover {
    background-color: var(--background-hover);
}

.table-modern tbody tr:nth-child(even) {
    background-color: rgba(6, 52, 69, 0.02);
}

.table-modern tbody tr:nth-child(even):hover {
    background-color: var(--background-hover);
}

.table-modern tbody tr:last-child {
    border-bottom: none;
}

.table-modern tbody td {
    padding: var(--spacing-4) var(--spacing-5);
    border: none;
    color: var(--text-primary);
    vertical-align: middle;
    line-height: var(--line-height-normal);
}

/* Table cell variants */
.table-modern .cell-center {
    text-align: center;
}

.table-modern .cell-right {
    text-align: right;
}

.table-modern .cell-nowrap {
    white-space: nowrap;
}

.table-modern .cell-truncate {
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Status badges in tables */
.table-modern .badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.table-modern .badge.badge-success {
    background-color: rgba(39, 174, 96, 0.1);
    color: var(--success-dark);
    border: 1px solid rgba(39, 174, 96, 0.2);
}

.table-modern .badge.badge-warning {
    background-color: rgba(243, 156, 18, 0.1);
    color: var(--warning-dark);
    border: 1px solid rgba(243, 156, 18, 0.2);
}

.table-modern .badge.badge-danger {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-dark);
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.table-modern .badge.badge-info {
    background-color: rgba(52, 152, 219, 0.1);
    color: var(--info-dark);
    border: 1px solid rgba(52, 152, 219, 0.2);
}

.table-modern .badge.badge-secondary {
    background-color: rgba(149, 172, 184, 0.1);
    color: var(--secondary-blue-dark);
    border: 1px solid rgba(149, 172, 184, 0.2);
}

/* Table variants */
.table-modern.table-striped tbody tr:nth-child(even) {
    background-color: var(--background-main);
}

.table-modern.table-bordered {
    border: 1px solid var(--border-light);
}

.table-modern.table-bordered th,
.table-modern.table-bordered td {
    border-right: 1px solid var(--border-light);
}

.table-modern.table-bordered th:last-child,
.table-modern.table-bordered td:last-child {
    border-right: none;
}

.table-modern.table-compact th,
.table-modern.table-compact td {
    padding: var(--spacing-2) var(--spacing-3);
}

.table-modern.table-spacious th,
.table-modern.table-spacious td {
    padding: var(--spacing-6) var(--spacing-8);
}

/* Table with secondary header color */
.table-modern.table-secondary thead {
    background: linear-gradient(135deg, var(--secondary-muted-blue), var(--secondary-blue-light)) !important;
    background-image: linear-gradient(135deg, var(--secondary-muted-blue), var(--secondary-blue-light)) !important;
}

.table-modern.table-secondary thead th {
    color: var(--text-white) !important;
}

/* Table with light header - default behavior */
.table-modern.table-light thead,
.table-modern thead {
    background: var(--border-light) !important;
    background-image: none !important;
}

.table-modern.table-light thead th,
.table-modern thead th {
    color: var(--text-primary) !important;
}

/* Action buttons in tables */
.table-modern .table-actions {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
    justify-content: flex-end;
}

.table-modern .table-actions .btn-modern {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    min-width: auto;
}

/* Avatar in tables */
.table-modern .table-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-light);
}

/* Progress bars in tables */
.table-modern .table-progress {
    width: 80px;
    height: 6px;
    background-color: var(--border-light);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.table-modern .table-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark-teal), var(--primary-teal-light));
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

/* Table footer */
.table-modern tfoot {
    background-color: var(--background-main);
    border-top: 2px solid var(--border-medium);
}

.table-modern tfoot td {
    padding: var(--spacing-4) var(--spacing-5);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

/* Empty state */
.table-empty {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
    color: var(--text-muted);
}

.table-empty-icon {
    font-size: var(--font-size-4xl);
    color: var(--text-light);
    margin-bottom: var(--spacing-4);
}

.table-empty-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-2);
}

.table-empty-subtext {
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

/* Table pagination */
.table-pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) 0;
    border-top: 1px solid var(--border-light);
    margin-top: var(--spacing-4);
}

.table-pagination-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.table-pagination-controls {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

.table-pagination-controls .btn-modern {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
}

/* Mobile responsive tables */
@media (max-width: 768px) {
    .table-responsive {
        display: block;
    }

    .table-responsive .table-modern {
        display: block;
        width: 100%;
        overflow-x: auto;
        white-space: nowrap;
    }

    .table-responsive .table-modern thead,
    .table-responsive .table-modern tbody,
    .table-responsive .table-modern th,
    .table-responsive .table-modern td,
    .table-responsive .table-modern tr {
        display: block;
    }

    .table-responsive .table-modern thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }

    .table-responsive .table-modern tbody tr {
        border: 1px solid var(--border-light);
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-3);
        padding: var(--spacing-3);
    }

    .table-responsive .table-modern td {
        position: relative;
        padding-left: 30% !important;
        text-align: right;
        white-space: normal;
    }

    .table-responsive .table-modern td:before {
        content: attr(data-label) ": ";
        position: absolute;
        left: var(--spacing-3);
        width: 25%;
        text-align: left;
        font-weight: var(--font-weight-semibold);
        color: var(--text-primary);
    }
}

/* ============================================
   🎴 CARD COMPONENTS
   ============================================ */
.modern-card {
    background: var(--background-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

.modern-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.modern-card-header {
    background: linear-gradient(135deg, var(--primary-dark-teal), var(--primary-teal-light));
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.modern-card-header h3 {
    color: var(--text-white);
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.modern-card-header .subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.modern-card-body {
    padding: var(--spacing-xl);
}

.modern-card-footer {
    background: var(--background-main);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border-light);
}

/* Card variants */
.modern-card.card-secondary .modern-card-header {
    background: linear-gradient(135deg, var(--secondary-muted-blue), var(--secondary-blue-light));
}

.modern-card.card-success .modern-card-header {
    background: linear-gradient(135deg, var(--success), var(--success-light));
}

.modern-card.card-warning .modern-card-header {
    background: linear-gradient(135deg, var(--warning), var(--warning-light));
}

.modern-card.card-danger .modern-card-header {
    background: linear-gradient(135deg, var(--danger), var(--danger-light));
}

/* ============================================
   🔘 BUTTON SYSTEM
   ============================================ */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.btn-modern:focus {
    outline: 2px solid var(--primary-teal-light);
    outline-offset: 2px;
}

.btn-modern:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Primary button */
.btn-primary {
    background: var(--primary-dark-teal);
    color: var(--text-white);
    border-color: var(--primary-dark-teal);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-teal-hover);
    border-color: var(--primary-teal-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* Secondary button */
.btn-secondary {
    background: var(--secondary-muted-blue);
    color: var(--text-white);
    border-color: var(--secondary-muted-blue);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--secondary-blue-hover);
    border-color: var(--secondary-blue-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Outline button */
.btn-outline {
    background: transparent;
    border-color: var(--primary-dark-teal);
    color: var(--primary-dark-teal);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary-dark-teal);
    color: var(--text-white);
    transform: translateY(-1px);
}

/* Status buttons */
.btn-success {
    background: var(--success);
    color: var(--text-white);
    border-color: var(--success);
}

.btn-success:hover:not(:disabled) {
    background: var(--success-dark);
    border-color: var(--success-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-dark);
    border-color: var(--danger-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-warning {
    background: var(--warning);
    color: var(--text-white);
    border-color: var(--warning);
}

.btn-warning:hover:not(:disabled) {
    background: var(--warning-dark);
    border-color: var(--warning-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-info {
    background: var(--info);
    color: var(--text-white);
    border-color: var(--info);
}

.btn-info:hover:not(:disabled) {
    background: var(--info-dark);
    border-color: var(--info-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Button sizes */
.btn-xs {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    gap: var(--spacing-1);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
    gap: var(--spacing-1);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-6);
    font-size: var(--font-size-base);
    gap: var(--spacing-2);
}

.btn-xl {
    padding: var(--spacing-5) var(--spacing-8);
    font-size: var(--font-size-lg);
    gap: var(--spacing-3);
}

/* Button block (full width) */
.btn-block {
    width: 100%;
}

/* ============================================
   📝 FORM COMPONENTS
   ============================================ */
.form-group-modern {
    margin-bottom: var(--spacing-lg);
}

.form-label-modern {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
    line-height: var(--line-height-normal);
}

.form-label-modern.required::after {
    content: ' *';
    color: var(--danger);
    font-weight: var(--font-weight-normal);
}

.form-input-modern {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-family-primary);
    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(--background-input);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    appearance: none;
}

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

.form-input-modern:focus {
    outline: none;
    border-color: var(--primary-dark-teal);
    background-color: var(--background-card);
    box-shadow: var(--shadow-outline);
}

.form-input-modern:hover:not(:focus):not(:disabled) {
    border-color: var(--border-dark);
}

.form-input-modern:disabled {
    background-color: var(--background-main);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Select styling */
.form-select-modern {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-3) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: var(--spacing-10);
}

/* Textarea styling */
textarea.form-input-modern {
    resize: vertical;
    min-height: 80px;
}

/* File input styling */
input[type="file"].form-input-modern {
    padding: var(--spacing-2);
    cursor: pointer;
}

input[type="file"].form-input-modern::-webkit-file-upload-button {
    background: var(--secondary-muted-blue);
    color: var(--text-white);
    border: none;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-base);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    margin-right: var(--spacing-3);
    cursor: pointer;
    transition: var(--transition-fast);
}

input[type="file"].form-input-modern::-webkit-file-upload-button:hover {
    background: var(--secondary-blue-dark);
}

/* Form validation states */
.form-input-modern.error,
.form-input-modern:invalid {
    border-color: var(--danger);
    background-color: #fef2f2;
}

.form-input-modern.error:focus,
.form-input-modern:invalid:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.form-input-modern.success {
    border-color: var(--success);
    background-color: #f0fdf4;
}

.form-input-modern.success:focus {
    border-color: var(--success);
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.1);
}

.form-error {
    color: var(--danger);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-normal);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.form-help {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

/* ============================================
   📊 BREADCRUMB & NAVIGATION
   ============================================ */
.breadcrumb-modern {
    background: transparent;
    padding: var(--spacing-4) 0;
    margin-bottom: var(--spacing-lg);
}

.breadcrumb-modern.breadcrumb-right {
    display: flex;
    justify-content: flex-end;
    padding: var(--spacing-4) var(--spacing-lg);
    margin-bottom: 0;
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
}

.breadcrumb-modern ol {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    list-style: none;
    font-size: var(--font-size-sm);
    margin: 0;
    padding: 0;
}

.breadcrumb-modern li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.breadcrumb-modern li:not(:last-child)::after {
    content: '›';
    color: var(--text-muted);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
}

.breadcrumb-modern a {
    color: var(--secondary-muted-blue);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.breadcrumb-modern a:hover {
    color: var(--primary-dark-teal);
}

.breadcrumb-modern .active {
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
}

/* ============================================
   🎯 LAYOUT UTILITIES
   ============================================ */
.container-modern {
    width: 100%;
    max-width:100%;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.row-modern {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin: 0;
}

.col-modern {
    flex: 1;
    min-width: 0;
}

.col-modern-half {
    flex: 0 0 calc(50% - var(--spacing-lg) / 2);
    min-width: 280px;
}

.col-modern-third {
    flex: 0 0 calc(33.333% - var(--spacing-lg) * 2 / 3);
    min-width: 250px;
}

.col-modern-quarter {
    flex: 0 0 calc(25% - var(--spacing-lg) * 3 / 4);
    min-width: 200px;
}

/* ============================================
   📱 RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .container-modern {
        padding: 0 var(--spacing-4);
    }

    .col-modern-half,
    .col-modern-third,
    .col-modern-quarter {
        flex: 1 1 100%;
        min-width: 0;
    }

    .modern-card-header,
    .modern-card-body,
    .modern-card-footer {
        padding: var(--spacing-4);
    }

    .text-h1 {
        font-size: var(--font-size-3xl);
    }

    .text-h2 {
        font-size: var(--font-size-2xl);
    }

    .btn-modern {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .breadcrumb-modern {
        padding: var(--spacing-2) 0;
        margin-bottom: var(--spacing-4);
    }

    .breadcrumb-modern ol {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .modern-card-header h3 {
        font-size: var(--font-size-lg);
    }

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

    .form-input-modern {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

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

/* Spacing utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-1); }
.m-2 { margin: var(--spacing-2); }
.m-3 { margin: var(--spacing-3); }
.m-4 { margin: var(--spacing-4); }
.m-5 { margin: var(--spacing-5); }
.m-6 { margin: var(--spacing-6); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-5 { margin-top: var(--spacing-5); }
.mt-6 { margin-top: var(--spacing-6); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-5 { margin-bottom: var(--spacing-5); }
.mb-6 { margin-bottom: var(--spacing-6); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-5 { padding: var(--spacing-5); }
.p-6 { padding: var(--spacing-6); }

/* Legacy spacing for easier migration */
.spacing-sm { margin-bottom: var(--spacing-sm); }
.spacing-md { margin-bottom: var(--spacing-md); }
.spacing-lg { margin-bottom: var(--spacing-lg); }
.spacing-xl { margin-bottom: var(--spacing-xl); }

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

/* Flexbox utilities */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

/* Position utilities */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }

/* Height utilities */
.h-full { height: 100%; }
.h-auto { height: auto; }
.h-fit { height: fit-content; }

/* Border radius utilities */
.rounded-none { border-radius: var(--radius-none); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-base); }
.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); }

/* Shadow utilities */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* ============================================
   🔔 NOTIFICATION SYSTEM
   ============================================ */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
    background: var(--background-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-4) var(--spacing-5);
    z-index: 9999;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left: 4px solid var(--success);
}

.notification.error {
    border-left: 4px solid var(--danger);
}

.notification.warning {
    border-left: 4px solid var(--warning);
}

.notification.info {
    border-left: 4px solid var(--info);
}