:root {
    /* Material 3 Color System */
    --primary: #6750A4;
    --primary-container: #EADDFF;
    --on-primary: #FFFFFF;
    --secondary: #625B71;
    --secondary-container: #E8DEF8;
    --on-secondary: #FFFFFF;
    --tertiary: #7D5260;
    --tertiary-container: #FFD8E4;
    --surface: #FFFBFE;
    --surface-variant: #E7E0EC;
    --surface-dim: #DED8E1;
    --surface-bright: #FFFBFE;
    --outline: #79747E;
    --outline-variant: #CAC4D0;
    --error: #B3261E;
    --error-container: #F9DEDC;
    
    /* Flutter App Specific */
    --app-bar-height: 64px;
    --bottom-nav-height: 72px;
    --card-radius: 20px;
    --small-radius: 12px;
    --large-radius: 28px;
    --elevation-1: 0 1px 3px rgba(0,0,0,0.12);
    --elevation-2: 0 3px 6px rgba(0,0,0,0.16);
    --elevation-3: 0 10px 20px rgba(0,0,0,0.19);
    --elevation-4: 0 14px 28px rgba(0,0,0,0.25);
    
    /* Animation */
    --transition-standard: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-emphasized: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-decelerated: 400ms cubic-bezier(0, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Roboto', 'Poppins', sans-serif;
    background: var(--surface);
    color: #1C1B1F;
    line-height: 1.5;
    overflow-x: hidden;
    padding-bottom: var(--bottom-nav-height);
    /* Flutter-like scroll physics */
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Custom Scrollbar - Flutter Style */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-variant);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--outline-variant);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--outline);
}

/* Material App Bar */
.app-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--app-bar-height);
    background: var(--surface);
    display: flex;
    align-items: center;
    padding: 0 16px;
    box-shadow: var(--elevation-1);
    z-index: 1000;
    transition: var(--transition-standard);
}

.app-bar.scrolled {
    box-shadow: var(--elevation-2);
    background: rgba(255, 251, 254, 0.95);
    backdrop-filter: blur(10px);
}

.app-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.app-bar-leading {
    display: flex;
    align-items: center;
    gap: 16px;
}

.app-bar-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    font-family: 'Poppins', sans-serif;
}

.location-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-container);
    color: var(--primary);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-standard);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.location-chip:hover {
    background: #E0D6FF;
    transform: translateY(-1px);
}

.app-bar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon-button {
    width: 40px;
    height: 40px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--secondary);
    cursor: pointer;
    transition: var(--transition-standard);
    position: relative;
}

.icon-button:hover {
    background: var(--surface-variant);
}

.icon-button.active {
    color: var(--primary);
    background: var(--primary-container);
}

.badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--error);
    border-radius: 50%;
    border: 2px solid var(--surface);
}

/* Main Content */
.main-content {
    padding-top: calc(var(--app-bar-height) + 24px);
    padding-bottom: 24px;
}

/* Welcome Card */
.welcome-card {
    background: linear-gradient(135deg, var(--primary) 0%, #7E69AB 100%);
    border-radius: var(--card-radius);
    padding: 24px;
    margin: 0 16px 24px;
    color: var(--on-primary);
    box-shadow: var(--elevation-3);
    position: relative;
    overflow: hidden;
}

.welcome-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.welcome-card h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    font-family: 'Poppins', sans-serif;
}

.welcome-card p {
    font-size: 14px;
    opacity: 0.9;
    max-width: 70%;
}

/* Search Card */
.search-card {
    background: var(--surface);
    border-radius: var(--card-radius);
    margin: 0 16px 24px;
    padding: 20px;
    box-shadow: var(--elevation-2);
    transition: var(--transition-standard);
}

.search-card:hover {
    box-shadow: var(--elevation-3);
}

.search-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.search-title h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

.search-input-container {
    position: relative;
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 16px 16px 16px 48px;
    border: 2px solid var(--outline-variant);
    border-radius: var(--small-radius);
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    transition: var(--transition-standard);
    background: var(--surface);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.1);
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--outline);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.filter-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--surface-variant);
    color: var(--secondary);
    padding: 12px 20px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-standard);
    border: none;
    font-family: 'Roboto', sans-serif;
}

.filter-chip:hover {
    background: var(--secondary-container);
    color: var(--secondary);
    transform: translateY(-2px);
}

.filter-chip.active {
    background: var(--primary);
    color: var(--on-primary);
}

.search-button {
    width: 100%;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    padding: 16px;
    border-radius: var(--small-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-standard);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-family: 'Roboto', sans-serif;
}

.search-button:hover {
    background: #5C4A94;
    transform: translateY(-2px);
    box-shadow: var(--elevation-3);
}

/* Quick Actions */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    margin-bottom: 20px;
}

.section-title {
    font-size: 20px;
    font-weight: 700;
    color: #1C1B1F;
    font-family: 'Poppins', sans-serif;
}

.see-all {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition-standard);
}

.see-all:hover {
    gap: 8px;
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 0 16px;
    margin-bottom: 32px;
}

@media (min-width: 768px) {
    .quick-actions-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.action-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 16px 8px;
    border-radius: var(--small-radius);
    transition: var(--transition-standard);
}

.action-button:hover {
    background: var(--surface-variant);
    transform: translateY(-4px);
}

.action-icon-container {
    width: 56px;
    height: 56px;
    border-radius: var(--large-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-primary);
    font-size: 24px;
}

.action-button:nth-child(1) .action-icon-container { background: linear-gradient(135deg, #FF6B6B 0%, #FF8E8E 100%); }
.action-button:nth-child(2) .action-icon-container { background: linear-gradient(135deg, #4ECDC4 0%, #6CE5DC 100%); }
.action-button:nth-child(3) .action-icon-container { background: linear-gradient(135deg, #FFD166 0%, #FFE08E 100%); }
.action-button:nth-child(4) .action-icon-container { background: linear-gradient(135deg, #06D6A0 0%, #2EF4C4 100%); }
.action-button:nth-child(5) .action-icon-container { background: linear-gradient(135deg, #118AB2 0%, #4AC6F7 100%); }
.action-button:nth-child(6) .action-icon-container { background: linear-gradient(135deg, #EF476F 0%, #FF7B9C 100%); }

.action-label {
    font-size: 12px;
    font-weight: 500;
    color: #1C1B1F;
    text-align: center;
    line-height: 1.3;
}

/* Category Cards */
.categories-scroll {
    display: flex;
    gap: 16px;
    padding: 0 16px;
    margin-bottom: 32px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 8px;
}

.categories-scroll::-webkit-scrollbar {
    display: none;
}

.category-card {
    flex: 0 0 auto;
    width: 140px;
    background: var(--surface);
    border-radius: var(--card-radius);
    padding: 20px;
    box-shadow: var(--elevation-1);
    transition: var(--transition-standard);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    border: 2px solid transparent;
}

.category-card:hover {
    box-shadow: var(--elevation-3);
    transform: translateY(-4px);
    border-color: var(--primary-container);
}

.category-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--large-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-container);
    color: var(--primary);
    font-size: 28px;
}

.category-name {
    font-size: 14px;
    font-weight: 600;
    color: #1C1B1F;
    text-align: center;
}

/* Featured Doctors */
.doctors-scroll {
    display: flex;
    gap: 20px;
    padding: 0 16px;
    margin-bottom: 32px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 8px;
}

.doctors-scroll::-webkit-scrollbar {
    display: none;
}

.doctor-card {
    flex: 0 0 auto;
    width: 280px;
    background: var(--surface);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: var(--elevation-2);
    transition: var(--transition-standard);
}

.doctor-card:hover {
    box-shadow: var(--elevation-4);
    transform: translateY(-6px);
}

.doctor-image-container {
    height: 160px;
    overflow: hidden;
    position: relative;
}

.doctor-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-standard);
}

.doctor-card:hover .doctor-image {
    transform: scale(1.05);
}

.availability-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--secondary-container);
    color: var(--secondary);
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.doctor-info {
    padding: 20px;
}

.doctor-name {
    font-size: 18px;
    font-weight: 700;
    color: #1C1B1F;
    margin-bottom: 4px;
    font-family: 'Poppins', sans-serif;
}

.doctor-specialty {
    font-size: 14px;
    color: var(--secondary);
    margin-bottom: 12px;
}

.doctor-details {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.doctor-detail {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--outline);
}

.doctor-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #FFB400;
    font-size: 14px;
    font-weight: 600;
}

.book-button {
    width: 100%;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    padding: 14px;
    border-radius: var(--small-radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-standard);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.book-button:hover {
    background: #5C4A94;
}

/* Specialties Grid */
.specialties-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 0 16px;
    margin-bottom: 32px;
}

@media (min-width: 768px) {
    .specialties-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .specialties-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.specialty-card {
    background: var(--surface);
    border-radius: var(--card-radius);
    padding: 24px 16px;
    box-shadow: var(--elevation-1);
    transition: var(--transition-standard);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    border: 2px solid transparent;
}

.specialty-card:hover {
    box-shadow: var(--elevation-3);
    transform: translateY(-4px);
    border-color: var(--primary-container);
}

.specialty-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--large-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--on-primary);
}

.specialty-card:nth-child(1) .specialty-icon { background: linear-gradient(135deg, #EF476F 0%, #FF7B9C 100%); }
.specialty-card:nth-child(2) .specialty-icon { background: linear-gradient(135deg, #FFD166 0%, #FFE08E 100%); }
.specialty-card:nth-child(3) .specialty-icon { background: linear-gradient(135deg, #06D6A0 0%, #2EF4C4 100%); }
.specialty-card:nth-child(4) .specialty-icon { background: linear-gradient(135deg, #118AB2 0%, #4AC6F7 100%); }
.specialty-card:nth-child(5) .specialty-icon { background: linear-gradient(135deg, #7B61FF 0%, #A28FFF 100%); }

.specialty-name {
    font-size: 14px;
    font-weight: 600;
    color: #1C1B1F;
    text-align: center;
}

/* Bottom Navigation - Flutter Style */
.bottom-navigation {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--surface);
    border-top: 1px solid var(--surface-variant);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 8px 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    color: var(--outline);
    transition: var(--transition-standard);
    flex: 1;
    padding: 12px 0;
    position: relative;
    border-radius: var(--small-radius);
    margin: 0 4px;
}

.nav-item:hover {
    background: var(--surface-variant);
}

.nav-item.active {
    color: var(--primary);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 32px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.nav-icon {
    font-size: 24px;
    transition: var(--transition-standard);
}

.nav-label {
    font-size: 11px;
    font-weight: 500;
    transition: var(--transition-standard);
}

.nav-item.active .nav-icon {
    transform: translateY(-2px);
}

/* Flutter-like animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

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

.flutter-fade-in {
    animation: fadeIn 600ms var(--transition-decelerated);
}

.flutter-scale-in {
    animation: scaleIn 500ms var(--transition-standard);
}

.flutter-slide-in {
    animation: slideInRight 400ms var(--transition-standard);
}

/* Responsive Design */
@media (max-width: 480px) {
    :root {
        --app-bar-height: 56px;
        --bottom-nav-height: 64px;
        --card-radius: 16px;
    }
    
    .quick-actions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .specialties-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .location-chip {
        max-width: 140px;
        font-size: 13px;
        padding: 6px 12px;
    }
}

@media (min-width: 1024px) {
    .main-content {
        max-width: 1200px;
        margin: 0 auto;
    }
}

/* Loading Skeleton - Flutter Style */
.skeleton {
    background: linear-gradient(90deg, 
        var(--surface-dim) 25%, 
        var(--surface-variant) 50%, 
        var(--surface-dim) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--small-radius);
}

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

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgba(255,255,255,0.3) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10,10);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
}

.ripple:active::after {
    transform: scale(0,0);
    opacity: 0.3;
    transition: 0s;
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + 20px);
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: var(--elevation-3);
    transition: var(--transition-standard);
    z-index: 999;
}

.fab:hover {
    transform: scale(1.1) translateY(-2px);
    box-shadow: var(--elevation-4);
}