doctor-appointment-system/public/css/dashboard.css

:root {
    --sidebar-width: 230px;
    --sidebar-bg: #1e293b;
    --sidebar-text: #94a3b8;
    --sidebar-text-active: #f1f5f9;
    --topbar-bg: #ffffff;
    --page-bg: #f8fafc;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-muted: #64748b;
}

* { box-sizing: border-box; }

body.overview-layout {
    min-height: 100vh;
    background: var(--page-bg);
    display: flex;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    color: var(--text);
    margin: 0;
    overflow-x: hidden;
}

/* ── Sidebar ── */
.ov-sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    overflow-x: hidden;
}

.ov-brand {
    padding: 1.25rem 1.25rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.ov-brand h1 {
    font-size: 1rem;
    font-weight: 700;
    color: #f1f5f9;
    margin: 0;
}

.ov-brand span {
    font-size: 0.72rem;
    color: var(--sidebar-text);
}

.ov-nav {
    padding: 0.75rem 0;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

.ov-nav__section {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #475569;
    padding: 0.75rem 1.25rem 0.25rem;
}

.ov-nav__link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 1.25rem;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    border-left: 2px solid transparent;
    transition: background 0.12s, color 0.12s;
}

.ov-nav__link:hover {
    background: rgba(255,255,255,0.05);
    color: var(--sidebar-text-active);
}

.ov-nav__link.active {
    background: rgba(255,255,255,0.08);
    color: var(--sidebar-text-active);
    border-left-color: #38bdf8;
}

.ov-nav__link i { font-size: 0.95rem; }

.ov-sidebar__footer {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(255,255,255,0.07);
}

.ov-sidebar__footer a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--sidebar-text);
    font-size: 0.83rem;
    text-decoration: none;
}

.ov-sidebar__footer a:hover { color: #f1f5f9; }

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

/* ── Topbar ── */
.ov-topbar {
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.ov-topbar__title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    margin: 0;
}

/* ── Profile / Avatar dropdown ── */
.ov-profile { position: relative; }

.ov-profile__btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    transition: background 0.12s;
}

.ov-profile__btn:hover { background: #f1f5f9; }

.ov-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f1f5f9;
    font-size: 0.82rem;
    font-weight: 700;
    flex-shrink: 0;
}

.ov-profile__name {
    font-size: 0.83rem;
    font-weight: 600;
    color: var(--text);
}

.ov-profile__caret {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.ov-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 6px);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    min-width: 180px;
    z-index: 200;
    padding: 0.4rem 0;
}

.ov-dropdown.open { display: block; }

.ov-dropdown__header {
    padding: 0.6rem 1rem 0.5rem;
    border-bottom: 1px solid var(--border);
}

.ov-dropdown__name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    margin: 0;
}

.ov-dropdown__role {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.ov-dropdown__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.83rem;
    color: var(--text);
    text-decoration: none;
    transition: background 0.1s;
}

.ov-dropdown__item:hover { background: #f8fafc; color: var(--text); }
.ov-dropdown__item.danger { color: #dc2626; }
.ov-dropdown__item.danger:hover { background: #fef2f2; }

.ov-dropdown__divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.3rem 0;
}

/* ── Content ── */
.ov-content { padding: 1.5rem; flex: 1; }

/* ── Stat cards ── */
.ov-stat {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ov-stat__icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: #f1f5f9;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #475569;
    flex-shrink: 0;
}

.ov-stat__label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-bottom: 0.1rem;
}

.ov-stat__value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
    margin: 0;
}

/* ── Panels ── */
.ov-panel {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.ov-panel__header {
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ov-panel__title {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text);
    margin: 0;
}

.ov-panel__body { padding: 1rem 1.25rem; }

/* ── Quick actions ── */
.ov-action {
    display: block;
    text-align: center;
    padding: 0.9rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #f8fafc;
    color: var(--text);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: background 0.12s, border-color 0.12s;
}

.ov-action:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: var(--text);
}

.ov-action i {
    display: block;
    font-size: 1.35rem;
    margin-bottom: 0.35rem;
    color: #475569;
}

/* ── Activity ── */
.ov-activity-item {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.6rem 0;
    border-bottom: 1px solid #f1f5f9;
}

.ov-activity-item:last-child { border-bottom: none; }

.ov-activity-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 0.35rem;
    flex-shrink: 0;
}

.ov-activity-text {
    font-size: 0.82rem;
    color: var(--text);
}

.ov-activity-time {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.1rem;
}

/* ── Mini table ── */
.ov-mini-table th {
    background: #f8fafc;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-color: var(--border);
}

.ov-mini-table td {
    font-size: 0.83rem;
    color: var(--text);
    border-color: #f1f5f9;
    vertical-align: middle;
}

/* ── Badges ── */
.ov-badge {
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.18em 0.6em;
}

.ov-badge--success { background: #dcfce7; color: #15803d; }
.ov-badge--warning { background: #fef9c3; color: #92400e; }
.ov-badge--danger  { background: #fee2e2; color: #b91c1c; }

/* ── Sidebar Toggle ── */
.ov-sidebar {
    transition: transform 0.25s ease;
}

.ov-sidebar.collapsed {
    transform: translateX(-100%);
}

.ov-main {
    transition: margin-left 0.25s ease;
}

.ov-main.expanded {
    margin-left: 0;
}

.ov-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 1.2rem;
    line-height: 1;
    transition: background 0.12s;
    margin-right: 0.75rem;
}

.ov-toggle-btn:hover {
    background: #f1f5f9;
    color: var(--text);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .ov-sidebar { display: none; }
    .ov-main { margin-left: 0; }
}

/* Hide dropdown initially */
.ov-dropdown-menu {
    display: none;
    padding-left: 30px;
}

/* Show when active */
.ov-nav__dropdown.active .ov-dropdown-menu {
    display: block;
}

/* Sub-links */
.ov-nav__sublink {
    display: block;
    padding: 8px 0;
    font-size: 14px;
    color: #aaa;
    text-decoration: none;
    transition: 0.3s;
}

.ov-nav__sublink:hover {
    color: #fff;
    transform: translateX(5px);
}
/* Dropdown icon style */
.dropdown-icon {
    font-size: 12px;
    color: inherit;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

/* Rotate when open */
.ov-nav__dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}
.ov-nav__link {
    transition: 0.3s;
}

.ov-nav__link:hover {
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
}