/* Color System */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --accent: #10b981;
    --danger: #ef4444;
    --neutral-900: #111827;
    --neutral-800: #1f2937;
    --neutral-700: #374151;
    --neutral-600: #4b5563;
    --neutral-500: #6b7280;
    --neutral-400: #9ca3af;
    --neutral-300: #d1d5db;
    --neutral-200: #e5e7eb;
    --neutral-100: #f3f4f6;
    --neutral-50: #f9fafb;
    --white: #ffffff;
    --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);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--white);
    color: var(--neutral-900);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.125rem;
}

p {
    margin-bottom: 1rem;
    color: var(--neutral-700);
}

/* Navigation */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--neutral-200);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--neutral-700);
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--primary);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-large {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--neutral-200);
    color: var(--neutral-900);
}

.btn-secondary:hover {
    background: var(--neutral-300);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-large:disabled,
.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
}

.hero-content h1 {
    margin-bottom: 1rem;
    color: var(--white);
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero .btn-large {
    background: var(--white);
    color: var(--primary);
}

.hero .btn-large:hover {
    background: var(--neutral-100);
}

/* How It Works */
.how-it-works {
    padding: 4rem 0;
    background: var(--neutral-50);
}

.how-it-works h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.step {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.75rem;
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step h3 {
    margin-bottom: 0.75rem;
}

.step p {
    margin-bottom: 0;
    color: var(--neutral-600);
}

/* Subjects Section */
.subjects {
    padding: 4rem 0;
}

.subjects h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.subject-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.75rem;
    text-align: center;
    border: 1px solid var(--neutral-200);
    transition: all 0.3s ease;
    cursor: pointer;
}

.subject-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.subject-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.subject-card h3 {
    color: var(--primary);
}

.subject-card p {
    color: var(--neutral-600);
    margin-bottom: 0;
}

/* Tutors Section */
.tutors-section {
    padding: 4rem 0;
    background: var(--neutral-50);
}

.tutors-section h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.search-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-input,
.filter-select {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    font-size: 1rem;
}

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

.tutors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.tutor-card {
    background: var(--white);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    cursor: pointer;
}

.tutor-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.tutor-card-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 3rem;
}

.tutor-card-content {
    padding: 1.5rem;
}

.tutor-card-content h3 {
    margin-bottom: 0.25rem;
}

.tutor-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.subject-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.tutor-rate {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.tutor-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.tutor-review-count {
    color: var(--neutral-500);
    font-size: 0.875rem;
}

.tutor-card-footer {
    padding: 1rem 1.5rem;
    background: var(--neutral-50);
    display: flex;
    gap: 1rem;
}

.tutor-card-footer button {
    flex: 1;
    padding: 0.5rem;
    font-size: 0.9rem;
}

/* Tutor Detail Modal */
.tutor-detail {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.tutor-detail-header {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--neutral-200);
}

.tutor-avatar-large {
    width: 200px;
    height: 200px;
    border-radius: 1rem;
    object-fit: cover;
    flex-shrink: 0;
}

.tutor-info-header h2 {
    margin-bottom: 0.5rem;
}

.tutor-subjects-list {
    margin-top: 1rem;
}

.session-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.session-type-item {
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    padding: 1rem;
}

.session-type-item h4 {
    color: var(--primary);
}

.session-type-item p {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.detail-section {
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--neutral-200);
}

.detail-section:last-child {
    border-bottom: none;
}

.reviews-list {
    display: grid;
    gap: 1.5rem;
}

.review-item {
    border-left: 4px solid var(--primary);
    padding-left: 1rem;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
}

.review-author {
    font-weight: 600;
}

.review-date {
    color: var(--neutral-500);
    font-size: 0.875rem;
}

.review-rating {
    color: #fbbf24;
    margin-bottom: 0.5rem;
}

.review-text {
    color: var(--neutral-700);
    line-height: 1.6;
}

.tutor-detail-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-200);
    text-align: center;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 1rem;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease-out;
}

.modal-large {
    max-width: 800px;
}

.modal-fullscreen {
    max-width: 100%;
    max-height: 100%;
    border-radius: 0;
}

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

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--neutral-500);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    z-index: 10;
}

.modal-close:hover {
    background: var(--neutral-100);
    color: var(--neutral-900);
}

/* Booking Workflow */
.booking-workflow {
    padding: 2rem;
}

.booking-progress {
    margin-bottom: 2rem;
}

.progress-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.progress-step {
    text-align: center;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.progress-step.active,
.progress-step.completed {
    opacity: 1;
}

.progress-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--neutral-200);
    color: var(--neutral-700);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 0.5rem;
    transition: all 0.3s ease;
}

.progress-step.active .progress-circle {
    background: var(--primary);
    color: var(--white);
}

.progress-step.completed .progress-circle {
    background: var(--accent);
    color: var(--white);
}

.progress-step p {
    font-size: 0.875rem;
    margin: 0;
}

.progress-bar {
    height: 2px;
    background: var(--neutral-300);
    border-radius: 1px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 25%;
    transition: width 0.3s ease;
}

/* Booking Steps */
.booking-content {
    min-height: 300px;
}

.booking-step {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.booking-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.step-subtitle {
    color: var(--neutral-500);
    margin-bottom: 2rem;
}

.session-options {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.session-option {
    border: 2px solid var(--neutral-300);
    border-radius: 0.75rem;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.session-option:hover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.session-option input {
    margin-right: 1rem;
    cursor: pointer;
}

.session-option-header {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.session-option-label {
    flex: 1;
}

.session-option-price {
    color: var(--primary);
    font-weight: 700;
}

.session-option-desc {
    color: var(--neutral-600);
    font-size: 0.875rem;
}

.booking-notes {
    background: var(--neutral-50);
    border-left: 4px solid var(--primary);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.booking-notes p {
    margin: 0;
    color: var(--neutral-700);
}

/* Calendar */
.calendar-section {
    margin-bottom: 2rem;
}

.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.calendar-nav button {
    background: var(--neutral-200);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.calendar-nav button:hover {
    background: var(--primary);
    color: var(--white);
}

.availability-slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
}

.time-slot {
    border: 2px solid var(--neutral-300);
    border-radius: 0.5rem;
    padding: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.time-slot:hover:not(.disabled) {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.time-slot.selected {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.time-slot.disabled {
    background: var(--neutral-100);
    color: var(--neutral-400);
    cursor: not-allowed;
}

.time-slot-time {
    font-weight: 600;
    display: block;
    margin-bottom: 0.25rem;
}

.time-slot-date {
    font-size: 0.75rem;
    color: var(--neutral-600);
}

.time-slot.selected .time-slot-date {
    color: rgba(255, 255, 255, 0.8);
}

/* Booking Summary */
.booking-summary {
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--neutral-200);
}

.summary-item.total {
    border-bottom: none;
    border-top: 2px solid var(--primary);
    padding-top: 1rem;
    font-weight: 700;
    font-size: 1.1rem;
}

.summary-value {
    text-align: right;
    font-weight: 600;
    color: var(--primary);
}

/* Payment Section */
.payment-section {
    margin-bottom: 2rem;
}

.payment-section h4 {
    margin-bottom: 1rem;
}

.payment-options {
    display: grid;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.payment-option {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.payment-option:hover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.payment-option input {
    margin-right: 1rem;
}

.card-form {
    display: grid;
    gap: 1rem;
    padding: 1rem;
    background: var(--neutral-50);
    border-radius: 0.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-input,
.form-textarea {
    padding: 0.75rem;
    border: 1px solid var(--neutral-300);
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
}

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

/* Confirmation */
.confirmation-content {
    text-align: center;
    padding: 2rem 0;
}

.confirmation-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.confirmation-content h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.confirmation-content > p {
    margin-bottom: 2rem;
    color: var(--neutral-600);
}

.confirmation-notes {
    text-align: left;
    background: var(--neutral-50);
    border-left: 4px solid var(--accent);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
}

.confirmation-notes h4 {
    margin-bottom: 1rem;
}

.confirmation-notes ul {
    list-style: none;
    padding: 0;
}

.confirmation-notes li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.confirmation-notes li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.url-text {
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
}

.booking-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding-top: 1.5rem;
    border-top: 1px solid var(--neutral-200);
}

.booking-actions.centered {
    justify-content: center;
}

/* Session Dashboard */
.session-dashboard {
    padding: 2rem;
}

.session-dashboard h2 {
    margin-bottom: 2rem;
}

.sessions-list {
    display: grid;
    gap: 2rem;
}

.session-card {
    border: 1px solid var(--neutral-300);
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.session-card:hover {
    box-shadow: var(--shadow-md);
}

.session-card-header {
    background: var(--neutral-50);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.session-card-header h3 {
    margin: 0;
}

.session-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--white);
}

.session-status.completed {
    background: var(--accent);
}

.session-card-body {
    padding: 1.5rem;
}

.session-card-body p {
    margin-bottom: 0.75rem;
    color: var(--neutral-700);
}

.session-card-body a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

.session-card-body a:hover {
    text-decoration: underline;
}

.session-feedback {
    background: var(--neutral-50);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
}

.session-feedback h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.session-card-footer {
    padding: 1.5rem;
    background: var(--neutral-50);
    display: flex;
    gap: 1rem;
    border-top: 1px solid var(--neutral-200);
}

.session-card-footer button {
    flex: 1;
}

/* Review Form */
.review-form {
    padding: 2rem;
}

.review-form h3 {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--neutral-900);
}

.rating-input {
    display: flex;
    gap: 0.5rem;
    flex-direction: row-reverse;
    justify-content: flex-end;
}

.rating-input input {
    display: none;
}

.rating-input label {
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s ease;
    margin: 0;
}

.rating-input label:hover {
    transform: scale(1.2);
}

.rating-input input:checked ~ label {
    filter: drop-shadow(0 0 2px var(--primary));
}

.form-textarea {
    width: 100%;
    resize: vertical;
    font-size: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--neutral-200);
}

/* Video Session */
.video-session {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.video-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1rem;
    padding: 1rem;
    background: var(--neutral-900);
}

.video-main,
.video-small {
    border-radius: 0.75rem;
    overflow: hidden;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.video-placeholder.student {
    background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
}

.session-toolbar {
    background: var(--neutral-800);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--neutral-700);
}

.session-info {
    color: var(--white);
}

.session-info h3 {
    margin: 0 0 0.25rem 0;
    color: var(--white);
}

.session-info p {
    margin: 0;
    color: var(--neutral-400);
    font-size: 0.9rem;
}

.toolbar-controls {
    display: flex;
    gap: 1rem;
}

.tool-button {
    background: var(--neutral-700);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.tool-button:hover {
    background: var(--primary);
}

.session-actions {
    display: flex;
    gap: 1rem;
}

.session-materials {
    background: var(--neutral-800);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--neutral-700);
}

.session-materials h4 {
    color: var(--white);
    margin-bottom: 0.75rem;
}

.session-materials ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.session-materials li {
    padding: 0.5rem 0;
}

.session-materials a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.session-materials a:hover {
    color: var(--white);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero {
        padding: 3rem 0;
    }

    .steps-grid,
    .subjects-grid {
        grid-template-columns: 1fr;
    }

    .progress-steps {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.5rem;
    }

    .progress-circle {
        width: 35px;
        height: 35px;
        font-size: 0.8rem;
    }

    .progress-step p {
        font-size: 0.7rem;
    }

    .tutor-detail-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .tutor-avatar-large {
        width: 150px;
        height: 150px;
    }

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

    .video-small {
        display: none;
    }

    .modal-content {
        max-width: 100%;
        border-radius: 1rem 1rem 0 0;
        margin-top: auto;
    }

    .session-toolbar {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .search-filters {
        flex-direction: column;
    }

    .search-input,
    .filter-select {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

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

    .session-options,
    .availability-slots {
        grid-template-columns: 1fr;
    }

    .booking-actions {
        flex-direction: column;
    }

    .booking-actions button {
        width: 100%;
    }
}