/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors - Vibrant University Theme */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --secondary-dark: #db2777;
    --accent: #14b8a6;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Neutrals - Dark Mode */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;

    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(148, 163, 184, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

.hidden {
    display: none !important;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===================================
   Animated Background Gradient
   =================================== */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg,
            var(--bg-primary) 0%,
            #1e1b4b 50%,
            var(--bg-primary) 100%);
    opacity: 0.8;
}

.gradient-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle,
            rgba(99, 102, 241, 0.15) 0%,
            transparent 50%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

/* ===================================
   Header
   =================================== */
.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 0.6s ease-out;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary);
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.header h1 {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ===================================
   Tabs Navigation
   =================================== */
.tabs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.6s ease-out 0.2s backwards;
}

.tab {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.tab:hover {
    background: rgba(30, 41, 59, 0.9);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.tab-icon {
    width: 24px;
    height: 24px;
}

/* ===================================
   Tab Content
   =================================== */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

.tab-content.active {
    display: block;
}

/* ===================================
   Cards
   =================================== */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.6s ease-out 0.3s backwards;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* ===================================
   Forms
   =================================== */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    position: relative;
}

.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.btn-edit {
    background: transparent;
    border: none;
    color: var(--primary-light);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0;
    pointer-events: none;
}

.form.readonly .btn-edit {
    opacity: 1;
    pointer-events: auto;
}

.btn-edit:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.btn-edit svg {
    width: 16px;
    height: 16px;
}

.form-input {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-base);
    appearance: none;
    cursor: pointer;
}

.form-input:disabled {
    background: rgba(30, 41, 59, 0.3);
    border-color: transparent;
    color: var(--text-secondary);
    cursor: default;
    opacity: 0.8;
}

select.form-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23cbd5e1'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.5rem;
    padding-right: 3rem;
}

.direction-buttons.disabled {
    pointer-events: none;
    opacity: 0.8;
}

.direction-buttons.disabled .direction-btn:not(.active) {
    display: none;
}

.direction-buttons.disabled .direction-btn.active {
    width: 100%;
}

/* Hide submit button when in readonly mode */
.form.readonly #submit-btn {
    display: none;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* Direction Buttons */
.direction-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.direction-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.direction-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.direction-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.direction-icon {
    width: 32px;
    height: 32px;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: var(--shadow-lg);
}

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

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

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--primary);
}

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

/* ===================================
   Matches & Rides Display
   =================================== */
.matches-section {
    margin-top: var(--spacing-xl);
    animation: fadeInUp 0.6s ease-out;
}

.matches-section.hidden {
    display: none;
}

.section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.title-icon {
    width: 28px;
    height: 28px;
    color: var(--accent);
}

.matches-container,
.rides-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.ride-card {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    animation: fadeInUp 0.4s ease-out backwards;
}

.ride-card:hover {
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.ride-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-md);
}

.ride-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.ride-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-to {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
}

.badge-from {
    background: rgba(236, 72, 153, 0.2);
    color: var(--secondary);
}

.ride-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.ride-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.detail-icon {
    width: 18px;
    height: 18px;
    color: var(--text-muted);
}

.time-diff {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(20, 184, 166, 0.1);
    border-radius: var(--radius-sm);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
}

.contact-info {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    word-break: break-all;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    opacity: 0.5;
}

/* Loading State */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-md);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ===================================
   Toast Notifications
   =================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    color: var(--text-primary);
    font-weight: 600;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transition: transform var(--transition-base);
    max-width: 90%;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: var(--success);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.toast.error {
    border-color: var(--error);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-md);
    }

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

    .header h1 {
        font-size: 1.75rem;
    }

    .direction-buttons {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Passenger List & Status
   =================================== */
.passenger-list-container {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
}

.passenger-list-header {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.5px;
}

.passenger-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.passenger-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    padding: var(--spacing-xs) 0;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.confirmed {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status-dot.pending {
    background: var(--warning);
    box-shadow: 0 0 8px var(--warning);
}

.passenger-name {
    color: var(--text-primary);
    font-weight: 500;
}

.status-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-left: auto;
}

.owner-badge {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    margin-left: var(--spacing-sm);
}

/* Mini Action Buttons */
.action-buttons-mini {
    display: flex;
    gap: 4px;
    margin-left: var(--spacing-sm);
}

.btn-mini {
    padding: 2px 8px;
    border: none;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-mini.btn-accept {
    background: var(--success);
    color: white;
}

.btn-mini.btn-accept:hover {
    background: #059669;
    transform: scale(1.05);
}

.btn-mini.btn-decline {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.btn-mini.btn-decline:hover {
    background: var(--error);
    color: white;
    transform: scale(1.05);
}

/* Confirmed Banner */
.confirmed-banner {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    color: var(--success);
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}


/* ===================================
   Riders Selector
   =================================== */
.riders-selector {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: space-between;
}

.rider-btn {
    flex: 1;
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.rider-btn:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.rider-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* ===================================
   Request Buttons & Actions
   =================================== */
.ride-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.btn-request,
.btn-accept,
.btn-decline,
.btn-unmatch,
.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-request {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    flex: 1;
}

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

.btn-request:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-accept {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
    flex: 1;
}

.btn-accept:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

.btn-decline {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    flex: 1;
}

.btn-decline:hover {
    background: var(--error);
    color: white;
    transform: translateY(-2px);
}

.btn-unmatch {
    background: var(--error);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8rem;
}

.btn-unmatch:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* ===================================
   Requests Section
   =================================== */
.requests-section {
    margin-bottom: var(--spacing-2xl);
}

.requests-section:last-child {
    margin-bottom: 0;
}

.subsection-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--bg-tertiary);
}

.subsection-title.matched {
    color: var(--success);
    border-bottom-color: var(--success);
}

.subsection-icon {
    width: 24px;
    height: 24px;
}

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

/* Request Card Variants */
.request-card {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.request-card.pending {
    border-color: var(--warning);
    background: rgba(245, 158, 11, 0.05);
}

.request-card.accepted {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.request-card.declined {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.05);
    opacity: 0.7;
}

.request-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
}

.status-pending {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.status-accepted {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-declined {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

/* Matched Ride Card */
.matched-card {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(20, 184, 166, 0.1));
    border: 2px solid var(--success);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.matched-card::before {
    content: '✓';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 4rem;
    color: var(--success);
    opacity: 0.1;
    font-weight: 900;
}

.matched-participants {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(16, 185, 129, 0.05);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--success);
}

.participant-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.participant-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.participant-icon {
    width: 16px;
    height: 16px;
    color: var(--success);
}

.seats-info {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
}

.seats-available {
    color: var(--success);
}

.seats-full {
    color: var(--error);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-md);
    }

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

    .header h1 {
        font-size: 1.75rem;
    }

    .direction-buttons {
        grid-template-columns: 1fr 1fr;
    }

    .tabs {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .tab {
        padding: var(--spacing-sm);
        font-size: 0.8rem;
    }

    .riders-selector {
        flex-wrap: wrap;
    }

    .rider-btn {
        min-width: 60px;
    }
}

.contact-info-pill {
    display: inline-block;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    margin-left: 8px;
    border: 1px solid var(--border);
    vertical-align: middle;
}

.hidden {
    display: none !important;
}

#create-ride-action {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

#delete-profile-container {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

#create-ride-form-container {
    margin-bottom: 2rem;
    border: 1px solid var(--accent);
}

.passenger-name {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
}

.filter-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.6rem 1.2rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

@keyframes soft-pulse {
    0% {
        border-color: var(--border);
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }

    50% {
        border-color: var(--accent);
        box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    }

    100% {
        border-color: var(--border);
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

.pulse-highlight {
    animation: soft-pulse 2s infinite ease-in-out;
    border-color: var(--accent) !important;
}