/* =============================================
   Azure AD Contacts PWA - KREAB Style
   Warm, professional design with maroon accent
   ============================================= */

/* Color Variables */
:root {
    /* Primary - KREAB Maroon */
    --color-primary: #8B1F41;
    --color-primary-dark: #6B1731;
    --color-primary-light: #A52750;
    
    /* Neutrals */
    --color-cream: #FAF8F5;
    --color-cream-dark: #F0EDE8;
    --color-white: #FFFFFF;
    --color-charcoal: #2D2D2D;
    --color-muted: #6c757d;
    --color-border: #E5E2DD;
    
    /* Accent */
    --color-gold: #C9A962;
    
    /* Semantic */
    --color-success: #2E7D32;
    --color-error: #C62828;
    
    /* Shadows */
    --shadow-card: 
        0 25px 50px -12px rgba(139, 31, 65, 0.15),
        0 12px 24px -8px rgba(139, 31, 65, 0.1);
    --shadow-sm: 0 2px 8px rgba(139, 31, 65, 0.08);
    --shadow-lg: 0 32px 64px rgba(139, 31, 65, 0.2);
    
    /* Typography */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Outfit', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 400ms ease-out;
}

/* Safe Areas */
.safe-area-top {
    padding-top: env(safe-area-inset-top, 0px);
}

.safe-area-bottom {
    padding-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
    color: var(--color-charcoal);
    line-height: 1.6;
    min-height: 100vh;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Card Component */
.card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
}

/* Header */
.app-header {
    background: var(--color-primary);
    color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Hide header on auth page */
body.auth-page .app-header {
    display: none;
}

body.auth-page .main-content {
    padding: 0;
    max-width: none;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
}

.header-accent {
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
    opacity: 0.4;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition-base);
}

.header-btn:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--space-lg);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

/* Sections */
.section {
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Auth Section */
.auth-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-xl);
}

.auth-card {
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    max-width: 420px;
    width: 100%;
}

.auth-logo-img {
    height: 40px;
    width: auto;
    margin-bottom: var(--space-md);
}

.auth-subtitle {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    color: var(--color-charcoal);
    margin-bottom: var(--space-lg);
}

.auth-description {
    color: var(--color-muted);
    margin-bottom: var(--space-xl);
    font-size: 0.95rem;
}

.auth-note {
    color: var(--color-muted);
    font-size: 0.85rem;
    margin-top: var(--space-xl);
}

/* Microsoft Sign-in Button */
.btn-microsoft {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    width: 100%;
    padding: var(--space-md) var(--space-xl);
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-microsoft:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-microsoft svg {
    flex-shrink: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-muted);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--color-primary);
    background: var(--color-cream);
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.85rem;
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    width: 100%;
}

/* User Bar */
.user-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    color: var(--color-charcoal);
    font-size: 0.95rem;
}

.user-email {
    font-size: 0.8rem;
    color: var(--color-muted);
}

/* Filter Section */
.filter-section {
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--space-lg);
}

.section-title svg {
    color: var(--color-primary);
}

.filter-controls {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.filter-row {
    display: flex;
    gap: var(--space-md);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.filter-group.flex-1 { flex: 1; }
.filter-group.flex-2 { flex: 2; }

.filter-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Form Inputs */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-charcoal);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 31, 65, 0.1);
}

.form-select:disabled {
    background: var(--color-cream);
    color: var(--color-muted);
    cursor: not-allowed;
}

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

.form-input.has-icon {
    padding-left: calc(var(--space-xl) + var(--space-sm));
}

.form-hint {
    font-size: 0.75rem;
    color: var(--color-muted);
    margin-top: var(--space-xs);
}

.input-wrapper,
.select-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    pointer-events: none;
}

.select-wrapper select {
    appearance: none;
    padding-right: var(--space-xl);
}

.select-icon {
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    pointer-events: none;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(139, 31, 65, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.accent {
    background: var(--color-primary);
    color: var(--color-white);
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-charcoal);
    line-height: 1;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Users Section */
.users-section {
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

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

.users-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* View Mode Toggle */
.view-mode-toggle {
    display: flex;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    padding: 3px;
}

.view-mode-btn {
    width: 36px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-mode-btn:hover {
    color: var(--color-charcoal);
}

.view-mode-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.selection-actions {
    display: flex;
    gap: var(--space-xs);
}

/* Alphabet Navigation */
.alphabet-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    margin-bottom: var(--space-md);
    padding: var(--space-sm);
    background: var(--color-cream);
    border-radius: var(--radius-md);
}

.alphabet-btn {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.alphabet-btn:hover:not(.disabled) {
    background: var(--color-white);
    color: var(--color-primary);
}

.alphabet-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
}

.alphabet-btn.disabled {
    opacity: 0.3;
    cursor: default;
}

/* Users List */
.users-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    max-height: 500px;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.users-list::-webkit-scrollbar {
    width: 4px;
}

.users-list::-webkit-scrollbar-track {
    background: var(--color-cream);
    border-radius: var(--radius-full);
}

.users-list::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

/* Letter Groups */
.letter-group {
    margin-bottom: var(--space-md);
}

.letter-header {
    position: sticky;
    top: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-xs) var(--space-md);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    z-index: 5;
}

/* User Item */
.user-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-cream);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.user-item-content:hover {
    background: var(--color-cream-dark);
    border-radius: var(--radius-md);
    margin: calc(var(--space-xs) * -1);
    padding: var(--space-xs);
}

.user-item-content:hover .user-item-arrow {
    color: var(--color-primary);
    transform: translateX(2px);
}

.user-item.selected {
    background: rgba(139, 31, 65, 0.1);
    border-color: var(--color-primary);
}

.user-item-checkbox {
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.user-item-checkbox:hover {
    border-color: var(--color-primary);
    background: rgba(139, 31, 65, 0.05);
}

.user-item.selected .user-item-checkbox {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.user-item-checkbox svg {
    width: 14px;
    height: 14px;
    color: var(--color-white);
    opacity: 0;
}

.user-item.selected .user-item-checkbox svg {
    opacity: 1;
}

.user-item-content {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    min-width: 0;
    cursor: pointer;
}

.user-item-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--color-white);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
    border: 2px solid var(--color-border);
}

.user-item-info {
    flex: 1;
    min-width: 0;
}

.user-item-name {
    font-weight: 500;
    color: var(--color-charcoal);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-item-meta {
    font-size: 0.8rem;
    color: var(--color-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-item-location {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-white);
    color: var(--color-muted);
    font-size: 0.7rem;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.user-item-arrow {
    color: var(--color-muted);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.user-item:hover .user-item-arrow {
    color: var(--color-primary);
    transform: translateX(2px);
}

/* Contact Panel */
.contact-panel {
    overflow: hidden;
    animation: slideIn 0.3s ease-out;
}

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

.contact-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.contact-panel-content {
    padding: var(--space-xl);
}

.contact-hero {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.contact-avatar-wrapper {
    display: inline-block;
    padding: 4px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.contact-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 2.5rem;
    font-weight: 700;
    overflow: hidden;
}

.contact-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-name {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.contact-title {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* Quick Actions */
.contact-quick-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-cream);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-muted);
    text-decoration: none;
    transition: all var(--transition-base);
    min-width: 70px;
    cursor: pointer;
}

.quick-action-btn:hover {
    background: var(--color-cream-dark);
    color: var(--color-charcoal);
    transform: translateY(-2px);
}

.quick-action-btn.primary {
    background: rgba(139, 31, 65, 0.1);
    color: var(--color-primary);
}

.quick-action-btn.primary:hover {
    background: rgba(139, 31, 65, 0.15);
}

.quick-action-btn .action-icon {
    width: 24px;
    height: 24px;
}

.quick-action-btn .action-label {
    font-size: 0.7rem;
    font-weight: 500;
}

/* Contact Details */
.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-cream);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
}

.contact-detail-item:hover {
    transform: translateX(4px);
}

.contact-detail-item.clickable:hover {
    background: var(--color-cream-dark);
}

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

.detail-icon.email { background: rgba(139, 31, 65, 0.1); color: var(--color-primary); }
.detail-icon.phone { background: rgba(46, 125, 50, 0.1); color: var(--color-success); }
.detail-icon.location { background: rgba(201, 169, 98, 0.2); color: #8B7335; }
.detail-icon.department { background: rgba(139, 31, 65, 0.08); color: var(--color-primary-light); }
.detail-icon.title { background: rgba(108, 117, 125, 0.1); color: var(--color-muted); }

.detail-content {
    flex: 1;
    min-width: 0;
}

.detail-label {
    font-size: 0.7rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    color: var(--color-charcoal);
    word-break: break-word;
}

.detail-action {
    color: var(--color-border);
    flex-shrink: 0;
}

.contact-detail-item:hover .detail-action {
    color: var(--color-muted);
}

/* Download Section */
.download-section {
    padding: var(--space-xl);
    text-align: center;
}

.download-options {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-lg);
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-cream);
    border-radius: var(--radius-md);
}

.toggle-option input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.toggle-option input:checked + .toggle-slider {
    background: var(--color-primary);
}

.toggle-option input:checked + .toggle-slider::after {
    left: 22px;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--color-muted);
}

.toggle-option input:checked ~ .toggle-label {
    color: var(--color-charcoal);
}

.download-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    color: var(--color-muted);
    font-size: 0.8rem;
    margin-top: var(--space-md);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(250, 248, 245, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

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

.loading-text {
    color: var(--color-muted);
    font-size: 0.9rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 400px;
    padding: var(--space-xl);
    animation: scaleIn 0.3s ease-out;
}

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

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-cream);
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-cream-dark);
    color: var(--color-charcoal);
}

.modal-header {
    margin-bottom: var(--space-lg);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-charcoal);
    margin-bottom: var(--space-sm);
}

.modal-description {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.modal-footer {
    margin-top: var(--space-lg);
}

.modal-footer .btn {
    width: 100%;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    left: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    z-index: 400;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease-out;
    pointer-events: auto;
    max-width: 360px;
}

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

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-error); }
.toast-info .toast-icon { color: var(--color-primary); }

.toast-message {
    flex: 1;
    font-size: 0.9rem;
    color: var(--color-charcoal);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--color-muted);
}

.empty-state svg {
    width: 60px;
    height: 60px;
    margin-bottom: var(--space-md);
    opacity: 0.4;
}

.empty-state-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-charcoal);
    margin-bottom: var(--space-xs);
}

.empty-state-text {
    font-size: 0.85rem;
}

/* =============================================
   Export Section
   ============================================= */

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

.export-title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.export-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

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

.btn-secondary:hover {
    background: var(--color-bg);
    border-color: var(--color-text-light);
}

/* =============================================
   Help Modal
   ============================================= */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-md);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    background: var(--color-surface);
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    padding: var(--space-xs);
    cursor: pointer;
    color: var(--color-text-light);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.modal-close:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.modal-body {
    padding: var(--space-lg);
}

.help-section {
    margin-bottom: var(--space-lg);
}

.help-section:last-child {
    margin-bottom: 0;
}

.help-section h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0 0 var(--space-sm) 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.help-section p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
}

.help-section ol {
    margin: var(--space-sm) 0;
    padding-left: var(--space-lg);
}

.help-section li {
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
    line-height: 1.5;
}

.help-note {
    font-size: 0.8rem !important;
    font-style: italic;
    margin-top: var(--space-sm) !important;
    padding: var(--space-sm);
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

/* =============================================
   Responsive Breakpoints
   - Mobile: < 640px
   - Tablet: 640px - 1024px
   - Desktop: > 1024px
   - Large: > 1400px
   ============================================= */

/* Large Desktop (>1400px) */
@media (min-width: 1400px) {
    .main-content {
        max-width: 900px;
    }

    .users-list {
        max-height: 700px;
    }

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

    .stat-card {
        padding: var(--space-lg);
    }

    .stat-value {
        font-size: 1.5rem;
    }
}

/* Desktop (>1024px) */
@media (min-width: 1024px) {
    .main-content {
        max-width: 800px;
        padding: var(--space-xl);
    }

    .dashboard-section {
        display: grid;
        gap: var(--space-lg);
    }

    .users-list {
        max-height: 600px;
    }

    .user-item {
        padding: var(--space-md) var(--space-lg);
    }

    .contact-panel-content {
        padding: var(--space-2xl);
    }

    .contact-avatar {
        width: 120px;
        height: 120px;
        font-size: 3rem;
    }

    .contact-name {
        font-size: 2rem;
    }
}

/* Tablet (640px - 1024px) */
@media (min-width: 640px) and (max-width: 1024px) {
    .main-content {
        max-width: 700px;
        padding: var(--space-lg);
    }

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

    .alphabet-nav {
        justify-content: center;
    }
}

/* Small Tablet / Large Phone (500px - 640px) */
@media (min-width: 500px) and (max-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .filter-row {
        flex-direction: row;
    }
}

/* Mobile (<640px) */
@media (max-width: 640px) {
    .main-content {
        padding: var(--space-md);
    }

    .card {
        border-radius: var(--radius-lg);
    }

    .auth-card {
        padding: var(--space-xl) var(--space-lg);
    }

    .auth-logo-img {
        height: 35px;
    }

    .auth-subtitle {
        font-size: 1.5rem;
    }

    .btn-microsoft {
        padding: var(--space-md) var(--space-lg);
        font-size: 0.95rem;
    }
}

/* Small Mobile (<500px) */
@media (max-width: 500px) {
    .filter-row {
        flex-direction: column;
    }

    .user-bar {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .user-info {
        flex-direction: column;
    }

    .users-header {
        flex-direction: column;
        align-items: stretch;
    }

    .users-actions {
        justify-content: space-between;
    }

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

    .stat-card {
        padding: var(--space-sm) var(--space-md);
    }

    .stat-value {
        font-size: 1.1rem;
    }

    .stat-label {
        font-size: 0.65rem;
    }

    .contact-quick-actions {
        gap: var(--space-sm);
    }

    .quick-action-btn {
        padding: var(--space-sm) var(--space-md);
        min-width: 60px;
    }

    .contact-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .contact-name {
        font-size: 1.5rem;
    }

    .contact-panel-content {
        padding: var(--space-lg);
    }

    .alphabet-nav {
        padding: var(--space-xs);
    }

    .alphabet-btn {
        width: 22px;
        height: 22px;
        font-size: 0.6rem;
    }

    .user-item-location {
        display: none;
    }

    .download-section {
        padding: var(--space-lg);
    }
}

/* Extra Small Mobile (<380px) */
@media (max-width: 380px) {
    .auth-card {
        padding: var(--space-lg) var(--space-md);
    }

    .auth-logo-img {
        height: 30px;
    }

    .auth-subtitle {
        font-size: 1.25rem;
    }

    .btn-microsoft {
        font-size: 0.9rem;
        gap: var(--space-sm);
    }

    .section-title {
        font-size: 0.85rem;
    }

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

    .user-item-avatar {
        width: 36px;
        height: 36px;
        font-size: 0.8rem;
    }

    .user-item-name {
        font-size: 0.9rem;
    }

    .user-item-meta {
        font-size: 0.75rem;
    }
}