/**
 * Layouts CSS
 * Responsive layout system
 */

/* ============================================
   APP LAYOUT (Post-Login)
   ============================================ */

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Desktop Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: var(--z-fixed);
    transition: transform var(--transition-base);
}

.sidebar-header {
    padding: var(--space-6) var(--space-5);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-primary);
}

.sidebar-logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4) 0;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    padding: 0 var(--space-5);
    margin-bottom: var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    color: var(--color-text);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

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

.nav-item.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: var(--font-medium);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-badge {
    margin-left: auto;
    background: var(--color-danger);
    color: white;
    font-size: var(--text-xs);
    padding: 2px 6px;
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--space-5);
    border-top: 1px solid var(--color-border);
}

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

.app-header {
    height: var(--header-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    color: var(--color-text);
}

.notification-btn {
    position: relative;
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.notification-btn:hover {
    background: var(--color-surface-hover);
}

.notification-btn .badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--color-danger);
    color: white;
    font-size: 10px;
    padding: 2px 5px;
    border-radius: var(--radius-full);
    min-width: 18px;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu:hover {
    background: var(--color-surface-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-bold);
}

.page-content {
    flex: 1;
    padding: var(--space-6);
}

.page-header {
    margin-bottom: var(--space-6);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.page-actions {
    margin-top: var(--space-4);
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 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);
}

.col-span-2 {
    grid-column: span 2;
}

.col-span-3 {
    grid-column: span 3;
}

.col-span-4 {
    grid-column: span 4;
}

/* ============================================
   FLEX UTILITIES
   ============================================ */

.flex {
    display: flex;
}

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

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

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

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

.justify-center {
    justify-content: center;
}

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

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

.gap-3 {
    gap: var(--space-3);
}

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

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

/* ============================================
   SPACING UTILITIES
   ============================================ */

.m-0 {
    margin: 0;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

/* ============================================
   MOBILE LAYOUT
   ============================================ */

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: calc(var(--z-fixed) - 1);
    }

    .sidebar-overlay.show {
        display: block;
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .app-header {
        padding: 0 var(--space-4);
    }

    .page-content {
        padding: var(--space-4);
        padding-bottom: calc(var(--mobile-nav-height) + var(--space-4));
    }

    /* Mobile Bottom Navigation */
    .mobile-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: var(--mobile-nav-height);
        background: var(--color-surface);
        border-top: 1px solid var(--color-border);
        z-index: var(--z-sticky);
    }

    .mobile-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-1);
        color: var(--color-text-muted);
        text-decoration: none;
        font-size: var(--text-xs);
        transition: all var(--transition-fast);
    }

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

    .mobile-nav-icon {
        font-size: var(--text-xl);
    }

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

@media (min-width: 1025px) {
    .mobile-nav {
        display: none;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: var(--text-2xl);
    }

    .modal {
        width: 95%;
        max-height: 95vh;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
    }
}

/* ============================================
   LOGIN LAYOUT
   ============================================ */

.login-container {
    min-height: 100vh;
    min-height: 100dvh;
    /* Dynamic viewport height for mobile */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    /* Support for safe areas on iPhone */
    padding-top: max(var(--space-4), env(safe-area-inset-top));
    padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
    padding-left: max(var(--space-4), env(safe-area-inset-left));
    padding-right: max(var(--space-4), env(safe-area-inset-right));
}

.login-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-2xl);
    width: 100%;
    max-width: 450px;
    text-align: center;
}

.login-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.login-title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.login-subtitle {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
    font-size: var(--text-base);
}

/* PIN Input Display */
.pin-input {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.pin-digit {
    width: 60px;
    height: 60px;
    font-size: var(--text-3xl);
    text-align: center;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    transition: all var(--transition-fast);
    cursor: default;
    /* Prevent mobile zoom on focus */
    font-size: 16px;
}

.pin-digit:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* PIN Pad */
.pin-pad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    max-width: 300px;
    margin: 0 auto;
}

.pin-key {
    aspect-ratio: 1;
    min-height: 60px;
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
    /* Better touch targets */
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.pin-key:hover:not(.empty) {
    background: var(--color-surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pin-key:active:not(.empty) {
    transform: translateY(0);
    background: var(--color-primary-light);
}

.pin-key.empty {
    visibility: hidden;
    pointer-events: none;
}

/* Mobile Responsive Login */
@media (max-width: 480px) {
    .login-container {
        padding: var(--space-3);
        /* Adjust for mobile keyboards */
        align-items: flex-start;
        padding-top: max(var(--space-6), env(safe-area-inset-top));
    }

    .login-card {
        padding: var(--space-6);
        /* Ensure card doesn't get hidden by keyboard */
        margin-top: 10vh;
    }

    .login-logo {
        width: 60px;
        height: 60px;
        font-size: 30px;
        margin-bottom: var(--space-4);
    }

    .login-title {
        font-size: var(--text-2xl);
    }

    .login-subtitle {
        font-size: var(--text-sm);
        margin-bottom: var(--space-6);
    }

    .pin-digit {
        width: 50px;
        height: 50px;
        font-size: var(--text-2xl);
    }

    .pin-pad {
        gap: var(--space-2);
    }

    .pin-key {
        min-height: 55px;
        font-size: var(--text-lg);
    }
}

/* Extra small phones */
@media (max-width: 360px) {
    .pin-digit {
        width: 45px;
        height: 45px;
    }

    .pin-key {
        min-height: 50px;
    }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .login-container {
        align-items: flex-start;
        padding-top: var(--space-2);
        overflow-y: auto;
    }

    .login-card {
        margin-top: var(--space-2);
        margin-bottom: var(--space-2);
        padding: var(--space-4);
    }

    .login-logo {
        width: 50px;
        height: 50px;
        margin-bottom: var(--space-3);
    }

    .pin-input {
        margin-bottom: var(--space-4);
    }

    .pin-digit {
        width: 40px;
        height: 40px;
    }

    .pin-key {
        min-height: 45px;
    }
}