/* PromptBari Design System */
/* Based on professional design guidelines */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Brand Colors */
    --color-primary-50: #EFF6FF;
    --color-primary-100: #DBEAFE;
    --color-primary-200: #BFDBFE;
    --color-primary-300: #93C5FD;
    --color-primary-400: #60A5FA;
    --color-primary-500: #3B82F6;
    --color-primary-600: #2563EB;
    --color-primary-700: #1D4ED8;
    --color-primary-800: #1E40AF;
    --color-primary-900: #1E3A8A;
    
    --color-secondary-50: #FAF5FF;
    --color-secondary-100: #F3E8FF;
    --color-secondary-200: #E9D5FF;
    --color-secondary-300: #D8B4FE;
    --color-secondary-400: #C084FC;
    --color-secondary-500: #A855F7;
    --color-secondary-600: #9333EA;
    --color-secondary-700: #7C3AED;
    --color-secondary-800: #6B21A8;
    --color-secondary-900: #581C87;
    
    --color-accent-50: #FFFBEB;
    --color-accent-100: #FEF3C7;
    --color-accent-200: #FDE68A;
    --color-accent-300: #FCD34D;
    --color-accent-400: #FBBF24;
    --color-accent-500: #F59E0B;
    --color-accent-600: #D97706;
    --color-accent-700: #B45309;
    --color-accent-800: #92400E;
    --color-accent-900: #78350F;
    
    /* Status Colors */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;
    
    /* Neutral Colors */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-code: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;      /* 12px */
    --text-sm: 0.875rem;     /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg: 1.125rem;     /* 18px */
    --text-xl: 1.25rem;      /* 20px */
    --text-2xl: 1.5rem;      /* 24px */
    --text-3xl: 1.875rem;    /* 30px */
    --text-4xl: 2.25rem;     /* 36px */
    --text-5xl: 3rem;        /* 48px */
    --text-6xl: 3.75rem;     /* 60px */
    
    /* Spacing */
    --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 */
    
    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ========================================
   Button Variants
   ======================================== */
.btn-success { background: linear-gradient(135deg, var(--color-success) 0%, #0a9c6e 100%); color: #fff; box-shadow: var(--shadow-md); }
.btn-success:hover { filter: brightness(0.95); box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.btn-warning { background: linear-gradient(135deg, var(--color-accent-500) 0%, var(--color-accent-600) 100%); color: #fff; box-shadow: var(--shadow-md); }
.btn-warning:hover { filter: brightness(0.95); box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.btn-danger { background: linear-gradient(135deg, var(--color-error) 0%, #b91c1c 100%); color: #fff; box-shadow: var(--shadow-md); }
.btn-danger:hover { filter: brightness(0.95); box-shadow: var(--shadow-lg); transform: translateY(-2px); }

.btn-outline { background: #fff; color: var(--color-gray-800); border: 2px solid var(--color-gray-300); }
.btn-outline:hover { background: var(--color-gray-50); border-color: var(--color-gray-400); }

.btn-link { background: transparent; color: var(--color-primary-600); padding: 0; }
.btn-link:hover { color: var(--color-primary-700); text-decoration: underline; }

/* ========================================
   Card Structure Helpers
   ======================================== */
.card-header { padding: var(--spacing-4) var(--spacing-6); border-bottom: 1px solid var(--color-gray-200); }
.card-body { padding: var(--spacing-6); }
.card-footer { padding: var(--spacing-4) var(--spacing-6); border-top: 1px solid var(--color-gray-200); }

/* ========================================
   Form Controls
   ======================================== */
.form-group { margin-bottom: var(--spacing-6); }
.form-label { display: block; font-weight: 600; color: var(--color-gray-800); margin-bottom: var(--spacing-2); }
.form-control { width: 100%; padding: var(--spacing-3) var(--spacing-4); border: 1px solid var(--color-gray-300); border-radius: var(--radius-lg); background: #fff; transition: box-shadow var(--transition-fast), border-color var(--transition-fast); }
.form-control:focus { outline: none; border-color: var(--color-primary-600); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }
.form-help { color: var(--color-gray-500); font-size: var(--text-sm); margin-top: var(--spacing-1); }
.form-error { color: var(--color-error); font-size: var(--text-sm); margin-top: var(--spacing-1); }
.textarea { min-height: 140px; resize: vertical; }
.select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--color-gray-500) 50%), linear-gradient(135deg, var(--color-gray-500) 50%, transparent 50%); background-position: calc(100% - 18px) calc(1em + 2px), calc(100% - 13px) calc(1em + 2px); background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }

/* Checkboxes & Radios */
.form-check { display: flex; align-items: center; gap: var(--spacing-2); }
.form-check-input { width: 1rem; height: 1rem; border-radius: .25rem; border: 1px solid var(--color-gray-300); }
.form-check-input:checked { background-color: var(--color-primary-600); border-color: var(--color-primary-600); }
.form-check-label { font-size: var(--text-sm); color: var(--color-gray-800); }

/* ========================================
   Tables
   ======================================== */
.table { width: 100%; border-collapse: separate; border-spacing: 0; background: #fff; border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg); overflow: hidden; }
.table th, .table td { padding: var(--spacing-3) var(--spacing-4); text-align: left; }
.table thead th { background: var(--color-gray-50); font-weight: 700; font-size: var(--text-sm); color: var(--color-gray-700); border-bottom: 1px solid var(--color-gray-200); }
.table tbody tr + tr td { border-top: 1px solid var(--color-gray-100); }
.table-hover tbody tr { transition: background var(--transition-fast); }
.table-hover tbody tr:hover { background: var(--color-gray-50); }
.table-striped tbody tr:nth-child(odd) { background: #fafafa; }
.table-responsive { width: 100%; overflow-x: auto; }

/* ========================================
   Pagination
   ======================================== */
.pagination { display: inline-flex; align-items: center; border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg); overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); }
.page-btn { display: inline-flex; align-items: center; padding: var(--spacing-2) var(--spacing-3); font-size: var(--text-sm); color: var(--color-gray-700); border-right: 1px solid var(--color-gray-200); background: #fff; }
.page-btn:hover { background: var(--color-gray-50); }
.page-btn:last-child { border-right: 0; }
.page-btn.active { background: var(--color-primary-600); color: #fff; }

/* ========================================
   Alerts / Notices
   ======================================== */
.alert { border-radius: var(--radius-lg); padding: var(--spacing-3) var(--spacing-4); border: 1px solid transparent; display: flex; align-items: flex-start; gap: var(--spacing-3); box-shadow: var(--shadow-sm); }
.alert-info { background: var(--color-primary-50); color: var(--color-primary-800); border-color: var(--color-primary-200); }
.alert-success { background: #ECFDF5; color: #065F46; border-color: #A7F3D0; }
.alert-warning { background: #FFFBEB; color: #92400E; border-color: #FDE68A; }
.alert-danger { background: #FEF2F2; color: #991B1B; border-color: #FECACA; }

/* ========================================
   Chips / Pills / Avatars
   ======================================== */
.chip { display: inline-flex; align-items: center; gap: var(--spacing-2); padding: 0 var(--spacing-3); height: 1.75rem; font-size: var(--text-xs); font-weight: 600; border-radius: var(--radius-full); background: var(--color-gray-100); color: var(--color-gray-700); }
.chip .dot { width: .5rem; height: .5rem; border-radius: 9999px; }
.pill { padding: 0 var(--spacing-3); border-radius: var(--radius-full); font-size: var(--text-sm); line-height: 1.75rem; display: inline-block; }
.avatar { width: 2rem; height: 2rem; border-radius: 9999px; display: inline-flex; align-items: center; justify-content: center; background: var(--color-primary-600); color: #fff; font-weight: 700; }

/* ========================================
   Breadcrumbs / Divider
   ======================================== */
.breadcrumb { display: flex; align-items: center; gap: var(--spacing-2); font-size: var(--text-sm); color: var(--color-gray-600); }
.breadcrumb a { color: var(--color-gray-600); }
.breadcrumb a:hover { color: var(--color-gray-800); }
.divider { height: 1px; width: 100%; background: var(--color-gray-200); margin: var(--spacing-6) 0; }

/* ========================================
   Tabs
   ======================================== */
.tabs { display: inline-flex; gap: var(--spacing-2); border-bottom: 1px solid var(--color-gray-200); }
.tab { padding: var(--spacing-2) var(--spacing-3); border-bottom: 2px solid transparent; color: var(--color-gray-600); font-weight: 600; }
.tab.active { border-color: var(--color-primary-600); color: var(--color-primary-700); }
.tab:hover { color: var(--color-gray-800); }

/* ========================================
   Line Clamp Utilities (fallback when Tailwind plugin unavailable)
   ======================================== */
.line-clamp-1, .line-clamp-2, .line-clamp-3 { display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-1 { -webkit-line-clamp: 1; }
.line-clamp-2 { -webkit-line-clamp: 2; }
.line-clamp-3 { -webkit-line-clamp: 3; }

/* ========================================
   Subtle Elevation / Hover Utilities
   ======================================== */
.elevate-sm { box-shadow: var(--shadow-sm); }
.elevate-md { box-shadow: var(--shadow-md); }
.elevate-lg { box-shadow: var(--shadow-lg); }
.hover-elevate:hover { box-shadow: var(--shadow-lg); transition: box-shadow var(--transition-base); }

/* ========================================
   Tiny Utilities
   ======================================== */
.status-dot { width: .5rem; height: .5rem; border-radius: 9999px; display: inline-block; }
.muted { color: var(--color-gray-500); }
.truncate-ellipsis { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kbd { font-family: var(--font-code); background: var(--color-gray-100); border: 1px solid var(--color-gray-300); border-bottom-width: 2px; border-radius: var(--radius-md); padding: 0 .35rem; font-size: 0.8em; }

/* ========================================
   Base Typography
   ======================================== */
body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

/* ========================================
   Button Styles
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-800) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-600);
}

.btn-secondary:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-700);
    color: var(--color-primary-700);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary-600);
}

.btn-ghost:hover {
    background: var(--color-primary-50);
}

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

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-lg);
}

/* ========================================
   Card Styles
   ======================================== */
.card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-6);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px) scale(1.02);
}

.card-bordered {
    border: 1px solid var(--color-gray-200);
    box-shadow: none;
}

.card-bordered:hover {
    border-color: var(--color-primary-300);
}

/* ========================================
   Input Styles
   ======================================== */
.input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--text-base);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    background: white;
}

.input:focus {
    outline: none;
    border-color: var(--color-primary-600);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input:disabled {
    background: var(--color-gray-100);
    cursor: not-allowed;
}

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

.input-error:focus {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* ========================================
   Badge Styles
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

.badge-secondary {
    background: var(--color-secondary-100);
    color: var(--color-secondary-700);
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

.badge-error {
    background: #FEE2E2;
    color: #991B1B;
}

/* ========================================
   Animation Keyframes
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-slide-left {
    animation: slideInFromLeft 0.6s ease-out;
}

.animate-slide-right {
    animation: slideInFromRight 0.6s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.3s ease-out;
}

.gradient-primary {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-secondary-600) 100%);
}

.gradient-secondary {
    background: linear-gradient(135deg, var(--color-secondary-600) 0%, var(--color-primary-600) 100%);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-secondary-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glassmorphism {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.text-balance {
    text-wrap: balance;
}

/* ========================================
   Loading States
   ======================================== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-200) 25%,
        var(--color-gray-300) 50%,
        var(--color-gray-200) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
    border-radius: var(--radius-md);
}

.loading-spinner {
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary-600);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

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

/* ========================================
   Responsive Utilities
   ======================================== */
@media (max-width: 640px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
    }
}

/* ========================================
   Dark Mode Support (Optional)
   ======================================== */
@media (prefers-color-scheme: dark) {
    .dark-mode {
        --color-gray-50: #1F2937;
        --color-gray-100: #374151;
        --color-gray-900: #F9FAFB;
    }
}