/* Layout styles */
/* Main layout structure and responsive grid */

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg-secondary);
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
    padding: 0 var(--spacing-lg);
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.header-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

/* Main content area */
.main {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 4rem);
}

/* Login page layout */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background-color: var(--color-bg-secondary);
}

.login-box {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

/* Calendar layout */
.calendar-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background-color: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.calendar-day-header {
    background-color: var(--color-bg);
    padding: var(--spacing-sm);
    text-align: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.calendar-day {
    background-color: var(--color-bg);
    min-height: 120px;
    padding: var(--spacing-sm);
    position: relative;
}

.calendar-day.other-month {
    background-color: var(--color-bg-secondary);
    opacity: 0.5;
}

.calendar-day.today {
    background-color: var(--color-primary-light);
}

.calendar-day-number {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
}

/* Sidebar and modal layouts */
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 500px;
    height: 100vh;
    background-color: var(--color-bg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.sidebar.active {
    transform: translateX(0);
}

.sidebar-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.sidebar-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: 1fr;
    }
    
    .calendar-day-header:not(:first-child) {
        display: none;
    }
    
    .calendar-day {
        min-height: auto;
        border-bottom: 1px solid var(--color-border);
    }
    
    .sidebar {
        max-width: 100%;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .calendar-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}