/* 🎨 Enhanced የ አዲስ አበባ ትራንስፖርት ቢሮ የክፍያ አስተዳደር ስርዓት
   Enterprise-Level, Ultra-Fast, Modern & Beautiful Design */

:root {
    /* 🎨 Custom Branding Colors - Transport Bureau Theme */
    --primary-color: #0EA5E9;      /* Sky blue - professional transport color */
    --primary-hover: #0284C7;
    --primary-light: #E0F2FE;
    --primary-dark: #075985;
    
    --secondary-color: #10B981;     /* Emerald - success/payment color */
    --secondary-hover: #059669;
    --secondary-light: #D1FAE5;
    
    --accent-color: #F59E0B;        /* Amber - warning/attention color */
    --accent-hover: #D97706;
    
    --destructive-color: #EF4444;
    --destructive-hover: #DC2626;
    
    /* Background colors */
    --background-light: #F8FAFC;
    --background-dark: #0F172A;
    --card-light: #FFFFFF;
    --card-dark: #1E293B;
    
    /* Text colors */
    --text-light: #1E293B;
    --text-dark: #F1F5F9;
    --text-muted-light: #64748B;
    --text-muted-dark: #94A3B8;
    
    /* Border colors */
    --border-light: #E2E8F0;
    --border-dark: #334155;
    
    /* Input colors */
    --input-bg-light: #FFFFFF;
    --input-bg-dark: #1E293B;
    --input-focus-ring: rgba(14, 165, 233, 0.3);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.03);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Animation durations */
    --duration-fast: 200ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

/* 🚀 Global Resets & Performance Optimizations */
html {
    scroll-behavior: smooth;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Noto Sans Ethiopic', sans-serif;
    background-color: var(--background-light);
    color: var(--text-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility; /* Sharper text rendering */
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}

.dark body {
    background-color: var(--background-dark);
    color: var(--text-dark);
}

/* 🎬 Advanced Animations (GPU Accelerated) */
@keyframes fade-in {
    from { opacity: 0; transform: translateY(10px) translateZ(0); }
    to { opacity: 1; transform: translateY(0) translateZ(0); }
}

@keyframes fade-in-scale {
    from { opacity: 0; transform: scale(0.95) translateZ(0); }
    to { opacity: 1; transform: scale(1) translateZ(0); }
}

@keyframes fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes scale-in {
    from { transform: scale(0.95) translateZ(0); }
    to { transform: scale(1) translateZ(0); }
}

@keyframes scale-out {
    from { transform: scale(1) translateZ(0); }
    to { transform: scale(0.95) translateZ(0); }
}

@keyframes slide-in-right {
    from { opacity: 0; transform: translateX(20px) translateZ(0); }
    to { opacity: 1; transform: translateX(0) translateZ(0); }
}

@keyframes slide-in-left {
    from { opacity: 0; transform: translateX(-20px) translateZ(0); }
    to { opacity: 1; transform: translateX(0) translateZ(0); }
}

@keyframes slide-down {
    from { opacity: 0; transform: translateY(-10px) translateZ(0); }
    to { opacity: 1; transform: translateY(0) translateZ(0); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(14, 165, 233, 0); }
}

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

@keyframes bounce-in {
    0% { opacity: 0; transform: scale(0.3) translateY(20px) translateZ(0); }
    50% { opacity: 1; transform: scale(1.05) translateZ(0); }
    70% { transform: scale(0.97) translateZ(0); }
    100% { transform: scale(1) translateY(0) translateZ(0); }
}

/* Animation Classes with Hardware Acceleration */
.animate-fade-in { animation: fade-in 0.5s var(--transition-base) forwards; will-change: transform, opacity; backface-visibility: hidden; }
.animate-fade-in-scale { animation: fade-in-scale 0.4s var(--transition-base) forwards; will-change: transform, opacity; }
.animate-slide-in-right { animation: slide-in-right 0.4s var(--transition-base) forwards; will-change: transform, opacity; }
.animate-slide-in-left { animation: slide-in-left 0.4s var(--transition-base) forwards; will-change: transform, opacity; }
.animate-slide-down { animation: slide-down 0.3s var(--transition-base) forwards; will-change: transform, opacity; }
.animate-bounce-in { animation: bounce-in 0.6s var(--transition-base) forwards; will-change: transform, opacity; }
.animate-fade-out { animation: fade-out 0.3s ease-out forwards; will-change: opacity; }
.animate-scale-in { animation: scale-in 0.3s ease-out forwards; will-change: transform; }
.animate-scale-out { animation: scale-out 0.3s ease-out forwards; will-change: transform; }

/* Stagger Animation Delays */
.stagger-1 { animation-delay: 50ms; }
.stagger-2 { animation-delay: 100ms; }
.stagger-3 { animation-delay: 150ms; }
.stagger-4 { animation-delay: 200ms; }
.stagger-5 { animation-delay: 250ms; }

/* 🎴 Modern Card Styles (Optimized with Containment) */
.card {
    background-color: var(--card-light);
    border: 1px solid var(--border-light);
    border-radius: 0.875rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    contain: layout style; /* Massive performance boost */
    will-change: transform, box-shadow;
}

.dark .card {
    background-color: var(--card-dark);
    border-color: var(--border-dark);
}

.card:hover {
    transform: translateY(-2px) translateZ(0);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

.card-hover-lift:hover {
    transform: translateY(-4px) translateZ(0);
    box-shadow: var(--shadow-xl);
}

/* 🔘 Enhanced Button Styles with Ripple Effect */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 0.625rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.875rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    will-change: transform, box-shadow;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
}

.btn:active::before {
    width: 400px;
    height: 400px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px) translateZ(0);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-hover) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px) translateZ(0);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.btn-destructive {
    background: linear-gradient(135deg, var(--destructive-color) 0%, var(--destructive-hover) 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.btn-destructive:hover:not(:disabled) {
    transform: translateY(-2px) translateZ(0);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.5);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--border-light);
    color: var(--text-light);
}

.dark .btn-outline {
    border-color: var(--border-dark);
    color: var(--text-dark);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-hover);
    transform: translateY(-2px) translateZ(0);
}

.dark .btn-outline:hover:not(:disabled) {
    background-color: rgba(14, 165, 233, 0.1);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-muted-light);
    padding: 0.5rem 1rem;
}

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

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

.dark .btn-ghost:hover:not(:disabled) {
    background-color: rgba(14, 165, 233, 0.1);
}

/* Back Button Special Style */
.btn-back {
    background-color: var(--card-light);
    border: 2px solid var(--border-light);
    color: var(--text-muted-light);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
}

.dark .btn-back {
    background-color: var(--card-dark);
    border-color: var(--border-dark);
    color: var(--text-muted-dark);
}

.btn-back:hover:not(:disabled) {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateX(-4px) translateZ(0);
}

.dark .btn-back:hover:not(:disabled) {
    background-color: rgba(14, 165, 233, 0.1);
}

/* 📝 Enhanced Form Input Styles */
.input {
    display: block;
    width: 100%;
    border-radius: 0.625rem;
    border: 2px solid var(--border-light);
    background-color: var(--input-bg-light);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
    box-shadow: var(--shadow-xs);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    will-change: border-color, box-shadow, transform;
}

.dark .input {
    border-color: var(--border-dark);
    background-color: var(--input-bg-dark);
    color: var(--text-dark);
}

.input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--input-focus-ring), var(--shadow-sm);
    transform: scale(1.01);
}

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

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

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

/* Label Styles */
label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 0.375rem;
}

.dark label {
    color: var(--text-dark);
}

/* 🎯 Badge Styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    transition: all var(--transition-fast);
}

.badge-primary { background-color: var(--primary-light); color: var(--primary-dark); }
.badge-success { background-color: var(--secondary-light); color: var(--secondary-hover); }
.badge-warning { background-color: #FEF3C7; color: #92400E; }
.badge-danger { background-color: #FEE2E2; color: #991B1B; }

.dark .badge-primary { background-color: rgba(14, 165, 233, 0.2); color: #7DD3FC; }
.dark .badge-success { background-color: rgba(16, 185, 129, 0.2); color: #6EE7B7; }

/* 📊 Stats Card Enhancement (Performance Optimized) */
.stat-card {
    padding: 1.5rem;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--card-light) 0%, var(--background-light) 100%);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    position: relative;
    overflow: hidden;
    contain: layout style;
    will-change: transform, box-shadow;
    transform: translateZ(0);
}

.dark .stat-card {
    background: linear-gradient(135deg, var(--card-dark) 0%, var(--background-dark) 100%);
    border-color: var(--border-dark);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.stat-card:hover {
    transform: translateY(-4px) scale(1.02) translateZ(0);
    box-shadow: var(--shadow-xl);
}

/* 📋 Table Enhancement */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

thead tr {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
}

thead th {
    padding: 1rem;
    font-weight: 600;
    text-align: left;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

thead th:first-child { border-top-left-radius: 0.75rem; }
thead th:last-child { border-top-right-radius: 0.75rem; }

tbody tr {
    background-color: var(--card-light);
    border-bottom: 1px solid var(--border-light);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    will-change: transform, background-color;
}

.dark tbody tr {
    background-color: var(--card-dark);
    border-bottom-color: var(--border-dark);
}

tbody tr:hover {
    background-color: var(--primary-light);
    transform: scale(1.005) translateZ(0);
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 10;
}

.dark tbody tr:hover { background-color: rgba(14, 165, 233, 0.05); }
tbody td { padding: 1rem; font-size: 0.875rem; }

/* ⚡ Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    will-change: transform;
}

.dark .spinner {
    border-color: var(--border-dark);
    border-top-color: var(--primary-color);
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--border-light) 25%, var(--background-light) 50%, var(--border-light) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 0.5rem;
    will-change: background-position;
}

.dark .skeleton {
    background: linear-gradient(90deg, var(--border-dark) 25%, var(--background-dark) 50%, var(--border-dark) 75%);
}

/* 🎭 Modal Enhancement */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px); /* Premium look */
    z-index: 50;
    animation: fade-in 0.2s ease;
    will-change: opacity;
}

.modal-content {
    position: relative;
    background-color: var(--card-light);
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
    animation: bounce-in 0.4s var(--transition-base);
    will-change: transform, opacity;
}

.dark .modal-content { background-color: var(--card-dark); }

/* 🍞 Toast Notifications */
.toast {
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slide-in-right 0.3s var(--transition-base);
    border-left: 4px solid;
    will-change: transform, opacity;
}

.toast-success { background-color: var(--secondary-light); border-left-color: var(--secondary-color); color: var(--secondary-hover); }
.toast-error { background-color: #FEE2E2; border-left-color: var(--destructive-color); color: var(--destructive-hover); }
.toast-info { background-color: var(--primary-light); border-left-color: var(--primary-color); color: var(--primary-hover); }

/* 📱 Responsive Utilities */
@media (max-width: 640px) {
    .btn { padding: 0.625rem 1rem; font-size: 0.8125rem; }
    .stat-card { padding: 1rem; }
    thead th, tbody td { padding: 0.75rem 0.5rem; font-size: 0.8125rem; }
}

/* 🎨 Custom Scrollbar */
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background-color: var(--background-light); border-radius: 10px; }
.dark ::-webkit-scrollbar-track { background-color: var(--background-dark); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    border: 2px solid var(--background-light);
}
.dark ::-webkit-scrollbar-thumb { border-color: var(--background-dark); }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(135deg, var(--primary-hover), var(--secondary-hover)); }

/* 🖨️ Print Styles */
@media print {
    body { background-color: white; color: black; }
    .no-print { display: none !important; }
    .card, table { box-shadow: none; border: 1px solid #ddd; contain: none; }
}

/* 🌟 Focus Visible for Accessibility */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Utility Classes */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass-effect {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
}