/* ==========================================================================
   LAYOUT — Sidebar + Main Content Area
   ========================================================================== */

/* ── App Shell ─────────────────────────────────────── */
.app {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ───────────────────────────────────────── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sidebar);
    overflow-y: auto;
    overflow-x: hidden;
    border-right: 1px solid rgba(0, 0, 0, 0.04);
}

/* ── Sidebar Logo ──────────────────────────────────── */
.sidebar__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-6) var(--space-5);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.sidebar__logo-icon {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(249, 168, 37, 0.3);
}

.sidebar__logo-icon svg {
    width: 26px;
    height: 26px;
    fill: #FFFFFF;
}

.sidebar__logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar__logo-title {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--sidebar-text-active);
    line-height: 1.2;
}

.sidebar__logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: var(--font-weight-medium);
}

/* ── Sidebar Navigation ───────────────────────────── */
.sidebar__nav {
    flex: 1;
    padding: var(--space-4) var(--space-3);
}

.sidebar__menu {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.sidebar__section-title {
    font-size: 0.7rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--space-4) var(--space-4) var(--space-1) var(--space-4);
    margin-top: var(--space-2);
}

.sidebar__menu > li:first-child .sidebar__section-title {
    margin-top: 0;
    padding-top: var(--space-1);
}

.sidebar__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    color: var(--sidebar-text);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    position: relative;
}

.sidebar__link:hover {
    background-color: var(--sidebar-hover-bg);
    color: var(--sidebar-text-active);
}

.sidebar__link.active {
    background-color: var(--sidebar-active-bg);
    color: var(--sidebar-text-active);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 2px 6px rgba(255, 213, 79, 0.4);
}

.sidebar__link .icon {
    width: 20px;
    height: 20px;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.sidebar__link:hover .icon,
.sidebar__link.active .icon {
    opacity: 1;
}

/* ── Sidebar User Profile ──────────────────────────── */
.sidebar__user {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar__user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
}

.sidebar__user-info {
    flex: 1;
    min-width: 0;
}

.sidebar__user-name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--sidebar-text-active);
    line-height: 1.3;
}

.sidebar__user-email {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar__user-toggle {
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-1);
    transition: color var(--transition-fast);
}

.sidebar__user-toggle:hover {
    color: var(--sidebar-text-active);
}

/* ── Main Content ──────────────────────────────────── */
.main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    min-width: 0; /* Prevent flex overflow */
}

/* ── Top Header ────────────────────────────────────── */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-8);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border-light);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
}

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

.header__greeting {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

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

.header__subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

.header__date {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: var(--color-surface);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.header__date:hover {
    border-color: var(--color-primary);
}

.header__date .icon {
    color: var(--color-text-muted);
}

.header__notification {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.header__notification:hover {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
}

.header__notification-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    background: var(--color-danger);
    color: white;
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-surface);
}

/* ── Sidebar Toggle Button ─────────────────────────── */
.sidebar-toggle {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    border: 1px solid transparent;
}

.sidebar-toggle:hover {
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

.sidebar-toggle:active {
    transform: scale(0.93);
}

.sidebar-toggle__icon {
    width: 20px;
    height: 20px;
    transition: all var(--transition-base);
}

/* Show hamburger by default, hide "collapsed" icon */
.sidebar-toggle__icon--close {
    display: none;
}

.sidebar-toggle__icon--menu {
    display: block;
}

/* When sidebar is collapsed, swap icons */
.app.sidebar-collapsed .sidebar-toggle__icon--close {
    display: block;
}

.app.sidebar-collapsed .sidebar-toggle__icon--menu {
    display: none;
}

/* ── Content Area ──────────────────────────────────── */
.content {
    flex: 1;
    padding: var(--space-6) var(--space-8);
    min-width: 0; /* Prevent flex overflow */
}

/* ── Footer ────────────────────────────────────────── */
.footer {
    padding: var(--space-6) var(--space-8);
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    border-top: 1px solid var(--color-border-light);
}

/* ── Sidebar Overlay (Mobile) ───────────────────────── */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sidebar) - 1);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

/* ==========================================================================
   SIDEBAR COLLAPSED STATE
   ========================================================================== */

/* Smooth transitions on sidebar and main */
.sidebar {
    transition: width var(--transition-base), transform var(--transition-base);
}

.main {
    transition: margin-left var(--transition-base);
}

/* ── Collapsed sidebar ─────────────────────────────── */
.app.sidebar-collapsed .sidebar {
    width: 76px;
}

.app.sidebar-collapsed .main {
    margin-left: 76px;
}

/* Hide text elements when collapsed */
.app.sidebar-collapsed .sidebar__logo-text,
.app.sidebar-collapsed .sidebar__section-title,
.app.sidebar-collapsed .sidebar__link span,
.app.sidebar-collapsed .sidebar__user-info,
.app.sidebar-collapsed .sidebar__user-toggle {
    opacity: 0;
    width: 0;
    overflow: hidden;
    white-space: nowrap;
    transition: opacity var(--transition-fast), width var(--transition-fast);
}

/* Adjust logo area */
.app.sidebar-collapsed .sidebar__logo {
    justify-content: center;
    padding: var(--space-5) var(--space-3);
    gap: 0;
}

/* Center nav links - icon only */
.app.sidebar-collapsed .sidebar__link {
    justify-content: center;
    padding: var(--space-3);
    gap: 0;
}

.app.sidebar-collapsed .sidebar__link .icon {
    width: 22px;
    height: 22px;
}

/* Nav padding */
.app.sidebar-collapsed .sidebar__nav {
    padding: var(--space-4) var(--space-2);
}

/* Center user avatar */
.app.sidebar-collapsed .sidebar__user {
    justify-content: center;
    padding: var(--space-4) var(--space-2);
    gap: 0;
}

/* ── Tooltip on hover when collapsed ───────────────── */
.app.sidebar-collapsed .sidebar__link {
    position: relative;
}

.app.sidebar-collapsed .sidebar__link::after {
    content: attr(data-tooltip);
    position: absolute;
    left: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: var(--color-text-primary);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: var(--z-tooltip);
    box-shadow: var(--shadow-lg);
}

.app.sidebar-collapsed .sidebar__link:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   RESPONSIVE LAYOUT
   ========================================================================== */

@media (max-width: 992px) {
    :root {
        --sidebar-width: 0px;
    }

    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
    }

    .sidebar.open {
        transform: translateX(0);
        width: 260px;
    }

    .main {
        margin-left: 0;
    }

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

    .header {
        padding: var(--space-4) var(--space-6);
    }
}

@media (max-width: 576px) {
    .header {
        padding: var(--space-3) var(--space-4);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .header__actions {
        width: 100%;
        justify-content: flex-end;
        gap: var(--space-2);
    }

    .header__title {
        font-size: var(--font-size-lg);
    }

    .header__date span {
        display: none; /* Hide date text on small screens, keep icon */
    }
}