/* Dele SuperApp - Premium UI v2 */

:root {
    /* Brand Colors - Sophisticated Palette */
    --primary: #0F172A;        /* Deep Navy */
    --primary-light: #1E293B;
    --secondary: #38BDF8;      /* Premium Blue */
    --accent: #F59E0B;         /* Gold Accent */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Shadows - Luxury Depth */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(56, 189, 248, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
    color: var(--gray-900);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loading Screen */
#loading-screen {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.loading-content {
    text-align: center;
    color: var(--white);
}

.logo h1 {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--white) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.logo p {
    font-size: 1.125rem;
    color: var(--gray-300);
    font-weight: 500;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--secondary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    margin: 2rem auto 0;
}

/* Small loading spinner for buttons */
.loading-spinner-sm {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
}

/* Loading spinner for cards */
.loading-spinner-card {
    width: 30px;
    height: 30px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    margin: 1rem auto;
}

/* Button loading state */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading .loading-spinner-sm {
    margin-right: 0.5rem;
}

/* Skeleton loading for ride cards */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-lg);
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-text.w-3-4 { width: 75%; }
.skeleton-text.w-1-2 { width: 50%; }
.skeleton-text.w-1-4 { width: 25%; }

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

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Screen System */
.screen {
    display: none;
    min-height: 100vh;
    position: relative;
}

.screen.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

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

/* Auth Screens */
#login-screen {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
}

.auth-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--gray-500);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xl);
}

.auth-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    background: var(--gray-100);
    padding: 0.25rem;
    border-radius: var(--radius-lg);
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.9375rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.tab-btn.active {
    background: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    color: var(--gray-900);
    background: var(--white);
    transition: var(--transition-base);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.1);
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--secondary) 0%, #0EA5E9 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Dashboard */
#dashboard-screen {
    background: var(--gray-50);
    min-height: 100vh;
    padding-bottom: 80px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

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

.user-info h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    letter-spacing: -0.01em;
}

.user-info p {
    font-size: 0.875rem;
    color: var(--gray-300);
}

.logout-btn {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.logout-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Wallet Card - Premium Glass Effect */
.wallet-card {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.9) 0%, rgba(14, 165, 233, 0.9) 100%);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    color: var(--white);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.wallet-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.wallet-balance {
    position: relative;
    z-index: 1;
}

.wallet-balance p {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.wallet-balance h3 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.wallet-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.wallet-btn {
    flex: 1;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.wallet-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* Quick Actions */
.quick-actions {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.action-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition-base);
}

.action-card:hover::before {
    transform: scaleX(1);
}

.action-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary);
}

.action-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto var(--spacing-md);
    transition: var(--transition-base);
}

.action-card:hover .action-icon {
    transform: scale(1.1) rotate(5deg);
}

.action-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.action-card p {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: var(--spacing-sm) var(--spacing-lg) calc(var(--spacing-sm) + env(safe-area-inset-bottom));
    display: flex;
    justify-content: space-around;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.05);
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem;
    border: none;
    background: transparent;
    color: var(--gray-500);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    border-radius: var(--radius-md);
}

/* Tab Color Coding */
.nav-item.nav-news.active {
    color: #7B2CBF; /* Purple */
}

.nav-item.nav-wallet.active {
    color: #E91E63; /* Pink */
}

.nav-item.nav-rides.active {
    color: #FFD60A; /* Yellow */
}

.nav-item.nav-navigation.active {
    color: #00D4AA; /* Green */
}

.nav-item.nav-profile.active {
    color: #6C757D; /* Gray */
}

.nav-item span:first-child {
    font-size: 1.5rem;
}

.nav-item:hover {
    background: var(--gray-50);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    max-width: 400px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-base);
}

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

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

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.close-btn {
    background: var(--gray-100);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.close-btn:hover {
    background: var(--gray-200);
    transform: rotate(90deg);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    min-width: 300px;
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    animation: slideInRight var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

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

.toast.success {
    border-color: var(--success);
}

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

.toast.warning {
    border-color: var(--warning);
}

.toast.info {
    border-color: var(--secondary);
}

/* Responsive */
@media (max-width: 640px) {
    .actions-grid {
        grid-template-columns: 1fr;
    }
    
    #toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .toast {
        min-width: auto;
    }
}

/* Accessibility */
*:focus {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

.action-card:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 0 2px var(--secondary);
}

.nav-item:focus {
    background: var(--secondary);
    color: var(--white);
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
        --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.15);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Performance optimizations */
.lazy-image {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy-image.loaded {
    opacity: 1;
}

/* 3G network optimizations */
@media (max-width: 768px) and (max-resolution: 1.5dppx) {
    .high-res-image {
        display: none;
    }
}

/* Prevent layout shift */
.action-icon {
    min-height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Optimize font loading */
@font-face {
    font-family: 'SF Pro Display';
    font-display: swap;
    src: local('SF Pro Display');
}

/* Utility Classes */
.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-xl); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-xl); }