/* ============================================
   Survey Builder — Design Tokens & Shared
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@300;400;500;600;700&display=swap');

:root {
    /* Colors */
    --color-primary: #07B7BF;
    --color-primary-hover: #069a9f;
    --color-primary-light: rgba(7, 183, 191, 0.1);
    --color-primary-50: rgba(7, 183, 191, 0.05);

    --color-dark: #0f1923;
    --color-dark-2: #1a2332;
    --color-dark-3: #243042;

    --color-text: #1a1a2e;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;

    --color-bg: #f8f9fb;
    --color-bg-white: #ffffff;
    --color-bg-hover: #f3f4f6;

    --color-border: #e5e7eb;
    --color-border-light: #f0f1f3;

    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.1);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.1);

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

    /* Typography */
    --font-family: 'Figtree', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Sidebar */
    --sidebar-width: 240px;
    --sidebar-collapsed: 64px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html { font-size: 16px; }

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 16px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.5;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

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

.btn-danger {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}
.btn-danger:hover { background: #dc2626; }

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    padding: 6px 10px;
}
.btn-ghost:hover { background: var(--color-bg-hover); color: var(--color-text); }

.btn-sm { padding: 5px 12px; font-size: var(--font-size-xs); }
.btn-lg { padding: 12px 24px; font-size: var(--font-size-base); }
.btn-icon { padding: 8px; }

.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Form Elements */
.form-group { margin-bottom: var(--space-md); }
.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}
.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}
.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 8px 12px;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-textarea { resize: vertical; min-height: 80px; }
.form-select { cursor: pointer; }
.form-error { border-color: var(--color-danger) !important; }
.form-error-text { color: var(--color-danger); font-size: var(--font-size-xs); margin-top: 2px; }

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* Cards */
.card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}
.card-title {
    font-size: var(--font-size-md);
    font-weight: 600;
}

/* Tables */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg-white);
}
.table {
    width: 100%;
    border-collapse: collapse;
}
.table th {
    padding: 10px 16px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}
.table td {
    padding: 12px 16px;
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--color-primary-50); }

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
    line-height: 1.6;
}
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }
.badge-secondary { background: var(--color-bg-hover); color: var(--color-text-secondary); }

/* Stat cards */
.stat-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}
.stat-card .stat-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}
.stat-card .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
}
.stat-card .stat-change {
    font-size: var(--font-size-xs);
    margin-top: var(--space-xs);
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
    background: var(--color-bg-white);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--space-xl);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}
.modal-overlay.active .modal { transform: translateY(0); }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}
.modal-title { font-size: var(--font-size-lg); font-weight: 600; }
.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: 18px;
}
.modal-close:hover { background: var(--color-bg-hover); color: var(--color-text); }

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}
.toast {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 280px;
    animation: toastIn 0.3s ease forwards;
}
.toast.removing { animation: toastOut 0.3s ease forwards; }
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error { border-left: 3px solid var(--color-danger); }
.toast-warning { border-left: 3px solid var(--color-warning); }

@keyframes toastIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes toastOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* Confirm dialog */
.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}
.confirm-dialog {
    background: var(--color-bg-white);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    max-width: 400px;
    width: 90%;
    text-align: center;
}
.confirm-dialog h3 { margin-bottom: var(--space-sm); }
.confirm-dialog p { color: var(--color-text-secondary); margin-bottom: var(--space-lg); }
.confirm-actions { display: flex; gap: var(--space-sm); justify-content: center; }

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    justify-content: center;
    margin-top: var(--space-lg);
}
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    background: var(--color-bg-white);
    color: var(--color-text);
}
.pagination a:hover { background: var(--color-bg-hover); text-decoration: none; }
.pagination .active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.pagination .disabled { opacity: 0.4; pointer-events: none; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--color-text-muted);
}
.empty-state svg { margin-bottom: var(--space-md); opacity: 0.4; }
.empty-state h3 { color: var(--color-text); margin-bottom: var(--space-sm); font-size: var(--font-size-md); }
.empty-state p { margin-bottom: var(--space-lg); }

/* Dropdown menu */
.dropdown { position: relative; display: inline-block; }
.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 4px;
    min-width: 160px;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    display: none;
}
.dropdown-menu.show { display: block; }
.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 12px;
    font-size: var(--font-size-sm);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}
.dropdown-item:hover { background: var(--color-bg-hover); text-decoration: none; }
.dropdown-item.danger { color: var(--color-danger); }
.dropdown-divider { height: 1px; background: var(--color-border-light); margin: 4px 0; }

/* Utility */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.hidden { display: none !important; }

/* Skeleton loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-hover) 25%, var(--color-border-light) 50%, var(--color-bg-hover) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}
@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}