/* Layout and Grid System - Mobile-First */
@import './variables.css';

/* Main layout containers */
.layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.layout--auth {
    background: var(--primary-500);
    justify-content: center;
    align-items: center;
    padding: var(--space-4);
}

.layout--admin {
    background-color: var(--bg-secondary);
}

/* Header */
.header {
    background: var(--primary-500);
    color: var(--text-inverse);
    padding: var(--space-4);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-md);
}

.header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.header__logo {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-inverse);
    text-decoration: none;
}

.header__user {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
}

.header__menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.header__menu-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Desktop sidebar toggle */
.header__sidebar-toggle {
    display: none; /* Hidden by default (mobile) */
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.header__sidebar-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Sidebar */
.sidebar {
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-light);
    width: 100%;
    position: fixed;
    top: 0;
    left: -100%;
    height: 100vh;
    z-index: var(--z-fixed);
    transition: left var(--transition-normal);
    overflow-y: auto;
}

.sidebar--open {
    left: 0;
}

.sidebar__header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-light);
    background: var(--primary-500);
    color: var(--text-inverse);
    min-height: 80px; /* Match header height */
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Sidebar toggle button styling */
.sidebar__toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
}

.sidebar__toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.sidebar__toggle svg {
    transition: transform var(--transition-fast);
}

.sidebar__toggle--collapsed svg {
    transform: rotate(180deg);
}

.sidebar__controls {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.sidebar__title {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-1);
}

.sidebar__subtitle {
    font-size: var(--text-sm);
    opacity: 0.9;
}

.sidebar__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: var(--touch-target);
    height: var(--touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-inverse);
    cursor: pointer;
}

/* Navigation */
.nav {
    padding: var(--space-4) 0;
}

.nav__item {
    display: block;
    padding: var(--space-4) var(--space-6);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    border-left: 3px solid transparent;
    transition: all var(--transition-fast);
}

.nav__item:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-500);
}

.nav__item--active {
    background-color: var(--bg-secondary);
    color: var(--primary-500);
    border-left-color: var(--primary-500);
}

/* Main content area */
.main {
    flex: 1;
    min-height: 100vh; /* Full height since no header */
}

.main--with-sidebar {
    margin-left: 0;
    transition: margin-left var(--transition-normal);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-4);
}

.container--narrow {
    max-width: 600px;
}

.container--wide {
    max-width: 1400px;
}

/* Page header */
.page-header {
    margin-bottom: var(--space-8);
    padding: var(--space-6) 0 var(--space-4) 0; /* Add top padding since no header */
    border-bottom: 1px solid var(--border-light);
}

.page-header__title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.page-header__subtitle {
    font-size: var(--text-base);
    color: var(--text-secondary);
}

/* Grid system */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid--cols-1 { grid-template-columns: 1fr; }
.grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid--cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid--cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Flex utilities */
.flex {
    display: flex;
}

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

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

.flex--between {
    justify-content: space-between;
}

.flex--center {
    justify-content: center;
    align-items: center;
}

.flex--end {
    justify-content: flex-end;
}

.flex--gap-2 { gap: var(--space-2); }
.flex--gap-4 { gap: var(--space-4); }
.flex--gap-6 { gap: var(--space-6); }

/* Sidebar overlay for mobile */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.sidebar-overlay--visible {
    opacity: 1;
    visibility: visible;
}

/* Responsive visibility utilities */
.show-mobile {
    display: block;
}

.hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .show-mobile {
        display: none;
    }
    
    .hide-mobile {
        display: block;
    }
}

/* Auth layout specific */
.auth-container {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.auth-container__logo {
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-container__title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.auth-container__subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Responsive breakpoints */

/* Tablet and up (768px+) */
@media (min-width: 768px) {
    .header__menu-toggle {
        display: none;
    }
    
    .header__sidebar-toggle {
        display: flex; /* Show sidebar toggle on desktop */
    }
    
    .sidebar {
        position: fixed; /* Fixed sidebar on desktop */
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh; /* Full viewport height */
        box-shadow: var(--shadow-md);
        flex-shrink: 0; /* Prevent sidebar from shrinking */
        transition: width var(--transition-normal);
        z-index: var(--z-sticky);
    }
    
    .sidebar--collapsed {
        width: 60px !important;
        overflow: hidden;
    }
    
    .sidebar--collapsed .sidebar__title,
    .sidebar--collapsed .sidebar__subtitle,
    .sidebar--collapsed .nav__item span {
        display: none;
    }
    
    .sidebar--collapsed .sidebar__footer {
        display: none;
    }
    
    .sidebar__close {
        display: none;
    }
    
    .main--with-sidebar {
        margin-left: 280px; /* Compensate for fixed sidebar width */
        flex: 1;
        height: 100vh; /* Full height */
        overflow-y: auto; /* Only main content scrolls */
        transition: margin-left var(--transition-normal);
    }
    
    /* When sidebar is collapsed, adjust main margin - handled by JS */
    .layout--admin.sidebar-collapsed .main--with-sidebar {
        margin-left: 60px;
    }
    
    .layout--admin {
        flex-direction: row;
    }
    
    .layout--admin .main {
        min-height: 100vh;
    }
    
    .container {
        padding: var(--space-8) var(--space-6);
    }
    
    .sidebar-overlay {
        display: none;
    }
}

/* Desktop and up (1024px+) */
@media (min-width: 1024px) {
    .sidebar {
        width: 320px;
    }
    
    .main--with-sidebar {
        margin-left: 320px; /* Compensate for larger sidebar width */
    }
    
    /* When sidebar is collapsed, maintain 60px margin - handled by JS */
    .layout--admin.sidebar-collapsed .main--with-sidebar {
        margin-left: 60px;
    }
    
    .container {
        padding: var(--space-10) var(--space-8);
    }
}