:root {
    --primary-color: #0d9488; /* Teal 600 */
    --primary-dark: #0f766e; /* Teal 700 */
    --secondary-color: #f0fdfa; /* Teal 50 */
    --accent-color: #f59e0b; /* Amber 500 */
    --text-color: #1f2937; /* Gray 800 */
    --text-light: #6b7280; /* Gray 500 */
    --bg-color: #f3f4f6; /* Gray 100 */
    --white: #ffffff;
    --danger: #ef4444;
    --success: #10b981;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --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);
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-bottom: 70px; /* Space for bottom nav */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-dark);
    margin-bottom: 0.5em;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

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

.btn-primary:active {
    transform: scale(0.98);
    background-color: var(--primary-dark);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-block {
    display: block;
    width: 100%;
}

.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    margin-bottom: 1rem;
}

/* Header */
.top-nav {
    background: var(--white);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 50;
}

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

/* Bottom Nav */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    box-shadow: 0 -2px 10px rgb(0 0 0 / 0.05);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-light);
    padding: 0.5rem;
}

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

.nav-icon {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    background-color: #f9fafb;
    transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--white);
}

/* Services */
.service-card {
    border-left: 4px solid var(--primary-color);
}

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

.service-price {
    font-weight: 700;
    color: var(--primary-dark);
}

/* Physicians */
.physician-card {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.physician-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
    background-color: #e5e7eb;
}

/* States */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-pending { background-color: #fef3c7; color: #d97706; }
.status-confirmed { background-color: #d1fae5; color: #059669; }
.status-cancelled { background-color: #fee2e2; color: #dc2626; }
.status-completed { background-color: #e0e7ff; color: #4f46e5; }