/*
 * Layout Styles
 *
 * This file contains all layout structure styles including:
 * - Main content area
 * - Container and grid layouts
 * - Header layouts
 * - View containers
 * - Responsive layout adjustments
 */

/* Main Content Area */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left 0.2s ease-in-out;
}

.sidebar.collapsed ~ .main-content {
    margin-left: 80px;
}

.top-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.container {
    padding: 32px;
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
}

/* Loader Styles */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(28, 53, 94, 0.8);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.loader-overlay.active {
    display: flex;
    opacity: 1;
}

.loader {
    border: 5px solid var(--gray-300);
    border-top: 5px solid var(--secondary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    border-radius: var(--border-radius);
    padding: clamp(15px, 3vw, 25px);
    margin-bottom: clamp(20px, 4vw, 35px);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    width: 55px;
    height: 55px;
    background: var(--secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    color: var(--dark);
    font-weight: 800;
    box-shadow: 0 5px 15px rgba(255, 205, 0, 0.3);
}

.logo h1 {
    color: var(--dark);
    font-size: 2.4em;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: -1px;
}

.logo-subtitle {
    color: var(--primary);
    font-size: 0.9em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: -3px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 8px;
    background: var(--gray-100);
    padding: 6px;
    border-radius: 14px;
    border: 1px solid var(--gray-200);
    margin-top: 20px;
    width: 100%;
}

.nav-tab {
    padding: 12px 24px;
    border: none;
    background: transparent;
    color: var(--gray-600);
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

.nav-tab:hover {
    background: rgba(67, 97, 238, 0.08);
    color: var(--primary);
}

.nav-tab.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.25);
}

/* Views Container */
.views-container {
    margin-top: 30px;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* Footer */
.footer {
    padding: 24px 0;
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
    border-top: 1px solid var(--gray-200);
    margin-top: 48px;
}

.footer p {
    margin: 0;
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    padding: 8px 12px 8px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    width: 300px;
    transition: var(--transition);
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.1);
    background: var(--bg-secondary);
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--text-tertiary);
    pointer-events: none;
}

/* Grids */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

@media (max-width: 650px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

#appointments-section {
    grid-column: 1 / -1;
}

/* Responsive Adjustments - Tablet & Small Desktop (1024px and below) */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 4px 0 12px rgba(0, 0, 0, 0.1);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
    }

    .sidebar-toggle-btn {
        display: none;
    }

    .mobile-menu-btn,
    .mobile-overlay {
        display: block;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

    .sidebar.collapsed ~ .main-content {
        margin-left: 0;
    }

    .top-header {
        padding: 14px 20px;
        flex-wrap: wrap;
    }

    .header-left {
        flex: 1;
        min-width: 300px;
    }

    .container {
        padding: 24px 16px;
    }

    .page-title {
        font-size: 1.125rem;
    }

    .search-input {
        width: 220px;
    }

    .header-right {
        gap: 10px;
        flex-wrap: wrap;
    }
}

/* Responsive Adjustments - Mobile (767px and below) */
@media (max-width: 767px) {
    .top-header {
        padding: 12px;
    }

    .header-left {
        width: 100%;
        flex-wrap: wrap;
        gap: 8px;
    }

    .mobile-menu-btn {
        order: 1;
    }

    .page-title {
        order: 2;
        font-size: 1rem;
        flex: 1;
        min-width: 0;
    }

    .search-box {
        order: 3;
        width: 100%;
        flex-basis: 100%;
    }

    .search-input {
        width: 100%;
    }

    .header-right {
        width: 100%;
        gap: 8px;
        flex-wrap: wrap;
    }

    .sync-icon-btn {
        order: 3;
        margin-left: auto;
    }

    .theme-toggle {
        flex-shrink: 0;
    }

    .container {
        padding: 16px 12px;
    }
}

/* Touch device improvements */
@media (hover: none) and (pointer: coarse) {
    .nav-tab {
        min-height: 48px;
    }
}