/* ================================================================
   CRM Klinik — Design System CSS
   Premium Dark + Light Mode SaaS Interface
   ================================================================ */

/* ---- Google Font Import ---- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ----------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   ---------------------------------------------------------------- */
:root {
    /* Colors — Brand */
    --brand-50:  #eef2ff;
    --brand-100: #e0e7ff;
    --brand-200: #c7d2fe;
    --brand-300: #a5b4fc;
    --brand-400: #818cf8;
    --brand-500: #6366f1;  /* Primary */
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --brand-800: #3730a3;
    --brand-900: #312e81;

    /* Colors — Semantic */
    --color-success:    #10b981;
    --color-warning:    #f59e0b;
    --color-danger:     #ef4444;
    --color-info:       #3b82f6;

    /* Light Mode Surfaces */
    --surface-bg:       #f8fafc;
    --surface-card:     #ffffff;
    --surface-sidebar:  #0f172a;
    --surface-topbar:   #ffffff;
    --surface-hover:    #f1f5f9;
    --surface-border:   #e2e8f0;

    /* Light Mode Text */
    --text-primary:     #0f172a;
    --text-secondary:   #475569;
    --text-muted:       #94a3b8;
    --text-inverse:     #ffffff;

    /* Sidebar */
    --sidebar-width:    240px;
    --sidebar-collapsed: 64px;

    /* Topbar */
    --topbar-height:    60px;

    /* Layout */
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --radius-xl:   24px;
    --radius-full: 9999px;

    /* Spacing */
    --spacing-1:  4px;
    --spacing-2:  8px;
    --spacing-3:  12px;
    --spacing-4:  16px;
    --spacing-5:  20px;
    --spacing-6:  24px;
    --spacing-8:  32px;

    /* Shadow */
    --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
    --shadow-md:  0 4px 16px rgba(0,0,0,.10);
    --shadow-lg:  0 8px 32px rgba(0,0,0,.12);

    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark mode overrides */
.dark {
    --surface-bg:       #0f172a;
    --surface-card:     #1e293b;
    --surface-sidebar:  #0a0f1e;
    --surface-topbar:   #1e293b;
    --surface-hover:    #334155;
    --surface-border:   #334155;
    --text-primary:     #f1f5f9;
    --text-secondary:   #94a3b8;
    --text-muted:       #475569;
}

/* ----------------------------------------------------------------
   Reset & Base
   ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--surface-bg);
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s, color 0.3s;
}

a { color: var(--brand-500); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--brand-600); }

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

/* ----------------------------------------------------------------
   Sidebar
   ---------------------------------------------------------------- */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--surface-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    z-index: 100;
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.app-layout.sidebar-collapsed .sidebar {
    width: var(--sidebar-collapsed);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-5) var(--spacing-4);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    min-height: var(--topbar-height);
}

.brand-logo {
    flex-shrink: 0;
}

.logo-placeholder {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
}

.logo-placeholder svg { width: 18px; height: 18px; }

.logo-img { width: 36px; height: 36px; border-radius: var(--radius-md); object-fit: contain; }

.brand-name {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.brand-plan {
    font-size: 10px;
    background: var(--brand-500);
    color: #fff;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

/* Sidebar Nav */
.sidebar-nav {
    flex: 1;
    padding: var(--spacing-4) var(--spacing-2);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 4px; }

.nav-section-label {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 600;
    color: rgba(255,255,255,0.3);
    padding: var(--spacing-4) var(--spacing-3) var(--spacing-2);
    white-space: nowrap;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    color: rgba(255,255,255,0.65);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    margin-bottom: 2px;
    position: relative;
}

.nav-item:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

.nav-item.active {
    background: var(--brand-500);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99,102,241,0.4);
}

.nav-icon { width: 18px; height: 18px; flex-shrink: 0; }
.nav-label { font-size: 14px; transition: opacity 0.2s; }
.nav-badge {
    margin-left: auto;
    background: var(--color-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: var(--radius-full);
}

.nav-item--danger { color: rgba(239,68,68,0.7); }
.nav-item--danger:hover { background: rgba(239,68,68,0.1); color: var(--color-danger); }

.sidebar-footer {
    padding: var(--spacing-3) var(--spacing-2);
    border-top: 1px solid rgba(255,255,255,0.06);
}

/* ----------------------------------------------------------------
   Main Area
   ---------------------------------------------------------------- */
.main-area {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-layout.sidebar-collapsed .main-area {
    margin-left: var(--sidebar-collapsed);
}

/* ----------------------------------------------------------------
   Topbar
   ---------------------------------------------------------------- */
.topbar {
    height: var(--topbar-height);
    background: var(--surface-topbar);
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-6);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: background 0.3s;
}

.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

/* ----------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------- */
.btn-icon {
    width: 36px; height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.btn-icon:hover { background: var(--surface-hover); color: var(--text-primary); }
.btn-icon svg { width: 18px; height: 18px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
}

.btn--primary {
    background: var(--brand-500);
    color: #fff;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

.btn--primary:hover {
    background: var(--brand-600);
    box-shadow: 0 4px 12px rgba(99,102,241,0.4);
    transform: translateY(-1px);
}

.btn--secondary {
    background: var(--surface-hover);
    color: var(--text-primary);
    border: 1px solid var(--surface-border);
}

.btn--secondary:hover {
    background: var(--surface-border);
}

.btn--danger {
    background: var(--color-danger);
    color: #fff;
}

.btn--sm { padding: 6px 12px; font-size: 13px; }
.btn--lg { padding: 10px 24px; font-size: 15px; }

/* ----------------------------------------------------------------
   User Menu
   ---------------------------------------------------------------- */
.user-menu { position: relative; }

.user-avatar-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-1) var(--spacing-2);
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
    font-family: inherit;
}

.user-avatar-btn:hover { background: var(--surface-hover); }

.avatar {
    width: 32px; height: 32px;
    background: linear-gradient(135deg, var(--brand-400), var(--brand-600));
    border-radius: var(--radius-full);
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.user-name { font-size: 14px; font-weight: 500; }

/* ----------------------------------------------------------------
   Dropdown Menu
   ---------------------------------------------------------------- */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    padding: var(--spacing-2);
    z-index: 200;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    cursor: pointer;
}

.dropdown-item:hover { background: var(--surface-hover); }
.dropdown-item svg { width: 16px; height: 16px; }
.dropdown-item.text-danger { color: var(--color-danger); }
.dropdown-divider { height: 1px; background: var(--surface-border); margin: var(--spacing-2) 0; }

/* ----------------------------------------------------------------
   Page Content
   ---------------------------------------------------------------- */
.page-content {
    flex: 1;
    padding: var(--spacing-6);
    background: var(--surface-bg);
}

/* ----------------------------------------------------------------
   Page Header
   ---------------------------------------------------------------- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ----------------------------------------------------------------
   Cards
   ---------------------------------------------------------------- */
.card {
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.card:hover { box-shadow: var(--shadow-md); }

.card-header {
    padding: var(--spacing-5) var(--spacing-6);
    border-bottom: 1px solid var(--surface-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body { padding: var(--spacing-6); }
.card-footer {
    padding: var(--spacing-4) var(--spacing-6);
    border-top: 1px solid var(--surface-border);
    background: var(--surface-bg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ----------------------------------------------------------------
   Stat Cards (Dashboard)
   ---------------------------------------------------------------- */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.stat-card {
    background: var(--surface-card);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 44px; height: 44px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg { width: 22px; height: 22px; }
.stat-icon--blue  { background: rgba(59,130,246,0.12); color: var(--color-info); }
.stat-icon--green { background: rgba(16,185,129,0.12); color: var(--color-success); }
.stat-icon--orange { background: rgba(245,158,11,0.12); color: var(--color-warning); }
.stat-icon--purple { background: rgba(99,102,241,0.12); color: var(--brand-500); }
.stat-icon--red    { background: rgba(239,68,68,0.12); color: var(--color-danger); }

.stat-info { flex: 1; }
.stat-label { font-size: 12px; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 24px; font-weight: 700; color: var(--text-primary); line-height: 1.2; margin-top: 4px; }
.stat-change { font-size: 12px; margin-top: 4px; font-weight: 500; }
.stat-change--up   { color: var(--color-success); }
.stat-change--down { color: var(--color-danger); }

/* ----------------------------------------------------------------
   Tables
   ---------------------------------------------------------------- */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: var(--surface-bg);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--surface-border);
    white-space: nowrap;
}

.table td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--surface-border);
    color: var(--text-primary);
    font-size: 14px;
    vertical-align: middle;
}

.table tr:last-child td { border-bottom: none; }

.table tbody tr:hover td { background: var(--surface-hover); }

/* ----------------------------------------------------------------
   Badges
   ---------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge--success { background: rgba(16,185,129,0.12); color: var(--color-success); }
.badge--warning { background: rgba(245,158,11,0.12); color: var(--color-warning); }
.badge--danger  { background: rgba(239,68,68,0.12); color: var(--color-danger); }
.badge--info    { background: rgba(59,130,246,0.12); color: var(--color-info); }
.badge--purple  { background: rgba(99,102,241,0.12); color: var(--brand-500); }
.badge--gray    { background: var(--surface-hover); color: var(--text-muted); }

/* ----------------------------------------------------------------
   Forms
   ---------------------------------------------------------------- */
.form-group { margin-bottom: var(--spacing-5); }

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.form-control {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--surface-card);
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--brand-400);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control { cursor: pointer; }

textarea.form-control { resize: vertical; min-height: 100px; }

/* ----------------------------------------------------------------
   Alerts
   ---------------------------------------------------------------- */
.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    font-size: 14px;
    font-weight: 500;
}

.alert svg { width: 18px; height: 18px; flex-shrink: 0; }

.alert--success { background: rgba(16,185,129,0.1); color: #047857; border-left: 3px solid var(--color-success); }
.alert--error   { background: rgba(239,68,68,0.1); color: #b91c1c; border-left: 3px solid var(--color-danger); }
.alert--warning { background: rgba(245,158,11,0.1); color: #92400e; border-left: 3px solid var(--color-warning); }
.alert--info    { background: rgba(59,130,246,0.1); color: #1d4ed8; border-left: 3px solid var(--color-info); }

.alert-close {
    margin-left: auto;
    background: transparent;
    border: none;
    cursor: pointer;
    color: currentColor;
    opacity: 0.6;
    display: flex;
    align-items: center;
    padding: 0;
}

.alert-close:hover { opacity: 1; }
.alert-close svg { width: 16px; height: 16px; }

/* ----------------------------------------------------------------
   Breadcrumb
   ---------------------------------------------------------------- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--brand-500); }
.breadcrumb-sep { color: var(--text-muted); margin: 0 4px; }
.breadcrumb-current { color: var(--text-primary); font-weight: 500; }

/* ----------------------------------------------------------------
   Pagination
   ---------------------------------------------------------------- */
.pagination {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    justify-content: center;
    padding: var(--spacing-4) 0;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--surface-border);
    background: var(--surface-card);
    transition: var(--transition);
    cursor: pointer;
}

.page-link:hover { border-color: var(--brand-400); color: var(--brand-500); }
.page-link.active { background: var(--brand-500); border-color: var(--brand-500); color: #fff; }

/* ----------------------------------------------------------------
   Utility Helpers
   ---------------------------------------------------------------- */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.font-bold   { font-weight: 700; }
.font-medium { font-weight: 500; }

.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-wrap { flex-wrap: wrap; }

.gap-2       { gap: 8px; }
.gap-3       { gap: 12px; }
.gap-4       { gap: 16px; }
.gap-6       { gap: 24px; }
.gap-8       { gap: 32px; }
.gap-10      { gap: 40px; }
.gap-12      { gap: 48px; }
.gap-16      { gap: 64px; }
.gap-20      { gap: 80px; }

.m-0         { margin: 0; }
.mt-1        { margin-top: 4px; }
.mt-2        { margin-top: 8px; }
.mt-4        { margin-top: 16px; }
.mt-6        { margin-top: 24px; }
.mt-8        { margin-top: 32px; }
.mt-12       { margin-top: 48px; }

.mb-1        { margin-bottom: 4px; }
.mb-2        { margin-bottom: 8px; }
.mb-4        { margin-bottom: 16px; }
.mb-6        { margin-bottom: 24px; }
.mb-8        { margin-bottom: 32px; }
.mb-12       { margin-bottom: 48px; }
.mb-20       { margin-bottom: 80px; }

.ml-1        { margin-left: 4px; }
.ml-2        { margin-left: 8px; }
.mr-2        { margin-right: 8px; }

.mx-2        { margin-left: 8px; margin-right: 8px; }
.mx-4        { margin-left: 16px; margin-right: 16px; }
.mx-auto     { margin-left: auto; margin-right: auto; }

.p-0         { padding: 0; }
.p-4         { padding: 16px; }
.p-6         { padding: 24px; }

.px-2        { padding-left: 8px; padding-right: 8px; }
.px-4        { padding-left: 16px; padding-right: 16px; }
.px-6        { padding-left: 24px; padding-right: 24px; }

.py-2        { padding-top: 8px; padding-bottom: 8px; }
.py-4        { padding-top: 16px; padding-bottom: 16px; }

.relative { position: relative; }
.w-full   { width: 100%; }
.h-px     { height: 1px; }
.w-px     { width: 1px; }

/* [x-cloak] - hide until Alpine initializes */
[x-cloak] { display: none !important; }

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width) !important;
    }

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

    .main-area {
        margin-left: 0 !important;
    }

    .stat-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr; }
    .page-content { padding: var(--spacing-4); }
}