/**
 * QR Code Generator - Main Stylesheet
 */

/* ============================================
   CSS VARIABLES & DESIGN SYSTEM
   ============================================ */
:root {
    /* Colors */
    --color-primary: #32808d;
    --color-primary-dark: #266b76;
    --color-primary-light: #4a9aa6;
    --color-secondary: #f5f5f5;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Text Colors */
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;
    
    /* Background Colors */
    --color-bg: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-dark: #111827;
    
    /* Border Colors */
    --color-border: #e5e7eb;
    --color-border-dark: #d1d5db;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --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 */
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.375rem;   /* 6px */
    --radius-lg: 0.5rem;     /* 8px */
    --radius-xl: 0.75rem;    /* 12px */
    --radius-2xl: 1rem;      /* 16px */
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--spacing-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(--spacing-md);
}

/* ============================================
   LAYOUT & CONTAINER
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-brand .logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.navbar-menu a {
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.navbar-menu a:hover {
    color: var(--color-primary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

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

.btn--lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn--full-width {
    width: 100%;
}

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

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(50, 128, 141, 0.1);
}

.form-control.error {
    border-color: var(--color-error);
}

.form-help {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.radio-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.radio-label:hover {
    border-color: var(--color-primary);
    background: rgba(50, 128, 141, 0.05);
}

.radio-label input[type="radio"]:checked + span {
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

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

.card__header h2 {
    margin: 0;
    font-size: var(--font-size-xl);
}

.card__body {
    padding: var(--spacing-lg);
}

.card__footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

/* ============================================
   TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    font-weight: 600;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.qr-thumbnail {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

/* ============================================
   BADGES & STATUS
   ============================================ */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge--primary {
    background: rgba(50, 128, 141, 0.1);
    color: var(--color-primary);
}

.status {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status--success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.status--success::before {
    background: var(--color-success);
}

.status--error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.status--error::before {
    background: var(--color-error);
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid;
}

.alert--success {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

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

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

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

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    opacity: 0;
    transform: translateY(-20px);
    transition: all var(--transition-base);
}

.notification.show {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   DASHBOARD SPECIFIC
   ============================================ */
.dashboard {
    padding: var(--spacing-xl) 0;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
}

.stat-icon--primary {
    background: rgba(50, 128, 141, 0.1);
    color: var(--color-primary);
}

.stat-icon--success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
}

.stat-icon--warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.stat-icon--info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.stat-content h3 {
    margin: 0;
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.stat-content p {
    margin: 0;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.stat-content small {
    color: var(--color-text-lighter);
    font-size: var(--font-size-xs);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .navbar-menu {
        display: none; /* Add mobile menu toggle */
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   LOADING STATE
   ============================================ */
body.loading::after {
    content: '';
    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: 99999;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

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

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

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

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



/* Navigation Styles */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.navbar-brand .logo {
    height: 32px;
}

.navbar-nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.navbar-nav a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.2s;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--color-primary);
}

.navbar-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.user-menu {
    position: relative;
}

.user-avatar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50px;
    transition: all 0.2s;
}

.user-avatar:hover {
    background: rgba(50, 128, 141, 0.08);
}

.user-avatar img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.user-menu-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 220px;
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s;
    z-index: 1001;
}

.user-menu-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--color-text);
    text-decoration: none;
    transition: background 0.2s;
}

.dropdown-item:hover {
    background: rgba(50, 128, 141, 0.08);
    color: var(--color-primary);
}

.dropdown-divider {
    height: 1px;
    background: rgba(0, 0, 0, 0.08);
    margin: 0.25rem 0;
}

.admin-link {
    color: #f59e0b !important;
}

.logout {
    color: #ef4444 !important;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--color-text);
    cursor: pointer;
}

@media (max-width: 768px) {
    .navbar-nav {
        display: none;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .navbar-actions {
        display: none;
    }
}


.footer {
    background: #0b1721;
    color: rgba(243, 244, 246, 0.8);
    padding: 3rem 0 2rem;
    font-size: 0.9rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-column h4 {
    margin-bottom: 0.75rem;
    color: #f9fafb;
}

.footer-column ul {
    padding: 0;
    margin: 0;
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: rgba(243, 244, 246, 0.8);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: #32808d;
}

.footer-bottom {
    border-top: 1px solid rgba(55, 65, 81, 0.8);
    padding-top: 1rem;
    text-align: center;
}
.create-qr-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2rem;
    margin-top: 2rem;
}

.qr-config-panel {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.qr-preview-panel {
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.form-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.qr-preview-container {
    text-align: center;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.qr-preview-img {
    max-width: 100%;
    max-height: 300px;
    border: 4px solid #f0f0f0;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.qr-preview-placeholder {
    color: #999;
    padding: 2rem;
}

.preview-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

@media (max-width: 1024px) {
    .create-qr-layout {
        grid-template-columns: 1fr;
    }
}

/* Page wrapper fills viewport minus header/footer and centers card */
.auth-page-wrapper {
    min-height: calc(100vh - 140px); /* adjust if your header/footer heights differ */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

/* Card styling consistent with dashboard theme */
.auth-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: 2rem 2.25rem;
}

.auth-card-header h1 {
    margin: 0 0 0.35rem;
    font-size: 1.6rem;
}

.auth-card-header p {
    margin: 0 0 1.5rem;
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.auth-form .form-group {
    margin-bottom: 1rem;
}

.password-input-group {
    position: relative;
}

.password-input-group .password-toggle {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    cursor: pointer;
    color: #9ca3af;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.auth-divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    position: absolute;
    top: 50%;
    width: 40%;
    height: 1px;
    background: #e5e7eb;
}

.auth-divider::before {
    left: 0;
}

.auth-divider::after {
    right: 0;
}

.auth-divider span {
    background: #ffffff;
    padding: 0 0.75rem;
}

.social-auth {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.auth-footer-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.auth-footer-text a {
    color: var(--color-primary);
}

@media (max-width: 640px) {
    .auth-card {
        padding: 1.75rem 1.5rem;
    }
}