/* ============================================================
   Themes — CSS custom properties
   ============================================================ */

:root[data-theme="light"] {
    --bg:               #f5f4f2;
    --surface:          #ffffff;
    --surface-2:        #eeeceb;
    --border:           #dedad6;
    --text:             #1c1917;
    --text-muted:       #78716c;
    --accent:           #4f46e5;
    --accent-hover:     #4338ca;
    --accent-text:      #ffffff;
    --nav-bg:           #1c1917;
    --nav-text:         #a8a29e;
    --nav-active-bg:    #4f46e5;
    --nav-active-text:  #ffffff;
    --nav-hover-bg:     rgba(255,255,255,0.07);
    --danger:           #dc2626;
    --badge-bg:         #ef4444;
    --badge-text:       #fff;
    --shadow:           0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
}

:root[data-theme="dark"] {
    --bg:               #0f0f0f;
    --surface:          #1a1a1a;
    --surface-2:        #252525;
    --border:           #2e2e2e;
    --text:             #e5e3df;
    --text-muted:       #737373;
    --accent:           #818cf8;
    --accent-hover:     #6366f1;
    --accent-text:      #ffffff;
    --nav-bg:           #080808;
    --nav-text:         #737373;
    --nav-active-bg:    #4f46e5;
    --nav-active-text:  #ffffff;
    --nav-hover-bg:     rgba(255,255,255,0.05);
    --danger:           #ef4444;
    --badge-bg:         #ef4444;
    --badge-text:       #fff;
    --shadow:           0 1px 3px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.2);
}

:root[data-theme="dusk"] {
    --bg:               #17102a;
    --surface:          #221640;
    --surface-2:        #2c1e52;
    --border:           #3d2a6e;
    --text:             #e8dff8;
    --text-muted:       #9a82c0;
    --accent:           #c084fc;
    --accent-hover:     #a855f7;
    --accent-text:      #1a0030;
    --nav-bg:           #0f0820;
    --nav-text:         #9a82c0;
    --nav-active-bg:    #7c3aed;
    --nav-active-text:  #ffffff;
    --nav-hover-bg:     rgba(255,255,255,0.06);
    --danger:           #f87171;
    --badge-bg:         #f87171;
    --badge-text:       #fff;
    --shadow:           0 1px 3px rgba(0,0,0,.4), 0 4px 12px rgba(100,0,200,.15);
}

:root[data-theme="forest"] {
    --bg:               #0c1a0e;
    --surface:          #132218;
    --surface-2:        #1b2e22;
    --border:           #284732;
    --text:             #d0e8cc;
    --text-muted:       #6a9e72;
    --accent:           #4ade80;
    --accent-hover:     #22c55e;
    --accent-text:      #082211;
    --nav-bg:           #071009;
    --nav-text:         #6a9e72;
    --nav-active-bg:    #16a34a;
    --nav-active-text:  #ffffff;
    --nav-hover-bg:     rgba(255,255,255,0.05);
    --danger:           #f87171;
    --badge-bg:         #ef4444;
    --badge-text:       #fff;
    --shadow:           0 1px 3px rgba(0,0,0,.4), 0 4px 12px rgba(0,60,0,.2);
}

:root[data-theme="ocean"] {
    --bg:               #050f1c;
    --surface:          #091e36;
    --surface-2:        #0e2b4e;
    --border:           #143d66;
    --text:             #bfdfef;
    --text-muted:       #5b9bbf;
    --accent:           #38bdf8;
    --accent-hover:     #0ea5e9;
    --accent-text:      #031420;
    --nav-bg:           #030b14;
    --nav-text:         #5b9bbf;
    --nav-active-bg:    #0284c7;
    --nav-active-text:  #ffffff;
    --nav-hover-bg:     rgba(255,255,255,0.05);
    --danger:           #f87171;
    --badge-bg:         #ef4444;
    --badge-text:       #fff;
    --shadow:           0 1px 3px rgba(0,0,0,.5), 0 4px 12px rgba(0,40,80,.3);
}

/* ============================================================
   Reset & base
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; display: block; }

/* ============================================================
   Layout
   ============================================================ */

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

/* Sidebar */
.sidebar {
    width: 220px;
    background: var(--nav-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 200;
    transition: transform 0.25s ease;
    border-right: 1px solid rgba(255,255,255,0.04);
}

.sidebar-top {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem 0 0;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0 1.25rem 1.25rem;
    color: var(--nav-text);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 0.5rem;
}
.sidebar-logo:hover { color: var(--text); }
.logo-icon { font-size: 1.1rem; }
.logo-text { font-weight: 600; font-size: 0.95rem; letter-spacing: 0.01em; }

/* Nav items */
.sidebar-nav { padding: 0.25rem 0; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1.25rem;
    color: var(--nav-text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 0;
    transition: background 0.15s, color 0.15s;
    position: relative;
    margin: 0.1rem 0.5rem;
    border-radius: 8px;
}
.nav-item:hover {
    background: var(--nav-hover-bg);
    color: var(--text);
}
.nav-item.active {
    background: var(--nav-active-bg);
    color: var(--nav-active-text);
}
.nav-icon { font-size: 1rem; width: 1.2rem; text-align: center; flex-shrink: 0; }
.nav-label { flex: 1; }

/* Collapsible nav group */
.nav-group { margin: 0.1rem 0; }
.nav-group-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: calc(100% - 1rem);
    margin: 0 0.5rem;
    padding: 0.65rem 0.75rem;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--nav-text);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s, color 0.15s;
}
.nav-group-toggle:hover { background: var(--nav-hover-bg); color: var(--text); }
.nav-chevron { margin-left: auto; font-size: 0.8rem; transition: transform 0.2s; line-height: 1; }
.nav-group-toggle.open .nav-chevron { transform: rotate(180deg); }
.nav-group-items { overflow: hidden; }
.nav-item.nav-sub { padding-left: 2.25rem; font-size: 0.875rem; }

/* Unread badge */
.nav-badge {
    background: var(--badge-bg);
    color: var(--badge-text);
    font-size: 0.7rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
}

/* Sidebar bottom */
.sidebar-bottom {
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.06);
}

/* Theme swatches */
.theme-label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--nav-text);
    margin-bottom: 0.5rem;
}
.theme-swatches {
    display: flex;
    gap: 6px;
    margin-bottom: 1rem;
}
.swatch {
    width: 22px; height: 22px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    padding: 0;
    transition: transform 0.15s, border-color 0.15s;
}
.swatch:hover { transform: scale(1.2); }
.swatch.active { border-color: var(--text); }
.swatch-light  { background: radial-gradient(circle at 40% 40%, #ffffff, #c8c4c0); }
.swatch-dark   { background: radial-gradient(circle at 40% 40%, #3a3a3a, #0f0f0f); }
.swatch-dusk   { background: radial-gradient(circle at 40% 40%, #c084fc, #17102a); }
.swatch-forest { background: radial-gradient(circle at 40% 40%, #4ade80, #0c1a0e); }
.swatch-ocean  { background: radial-gradient(circle at 40% 40%, #38bdf8, #050f1c); }

/* User row */
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.user-avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}
.user-avatar-placeholder {
    background: var(--accent);
    color: var(--accent-text);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 600;
}
.user-name {
    flex: 1;
    font-size: 0.85rem;
    color: var(--nav-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.logout-btn {
    color: var(--nav-text);
    font-size: 1.1rem;
    line-height: 1;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.15s;
}
.logout-btn:hover { color: var(--danger); }

/* Main content */
.main-content {
    margin-left: 220px;
    flex: 1;
    padding: 2rem;
    min-height: 100vh;
}

/* Mobile header */
.mobile-header {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 52px;
    background: var(--nav-bg);
    align-items: center;
    padding: 0 1rem;
    gap: 0.75rem;
    z-index: 150;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mobile-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
}
.hamburger {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.hamburger span {
    display: block;
    width: 22px; height: 2px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: background 0.15s;
}
.hamburger:hover span { background: var(--text); }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 190;
}

/* ============================================================
   Components
   ============================================================ */

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

/* Page header */
.page-header {
    margin-bottom: 1.75rem;
}
.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}
.page-header p {
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-size: 0.9rem;
}

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background 0.15s, opacity 0.15s;
    text-decoration: none;
    line-height: 1;
}
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { background: var(--accent-hover); color: var(--accent-text); }
.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 0.35rem;
}
input[type="text"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="email"],
select,
textarea {
    width: 100%;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: border-color 0.15s;
    outline: none;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
}
textarea { resize: vertical; min-height: 80px; }

/* Action buttons (small inline edit/delete controls) */
.action-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 9px;
    cursor: pointer;
    font-size: .75rem;
    color: var(--text-muted);
    transition: all .15s;
    line-height: 1.3;
    font-family: inherit;
}
.action-btn:hover { background: var(--surface-2); color: var(--text); }
.action-btn.del:hover { background: rgba(239,68,68,.1); border-color: var(--danger); color: var(--danger); }

/* Misc */
.text-muted { color: var(--text-muted); }
.divider { border: none; border-top: 1px solid var(--border); margin: 1.25rem 0; }

/* ============================================================
   Login page
   ============================================================ */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    padding: 1rem;
}
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 380px;
    text-align: center;
    box-shadow: var(--shadow);
}
.login-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.login-card h1 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}
.login-card p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}
.btn-google {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.925rem;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s;
    cursor: pointer;
}
.btn-google:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-text);
}
.google-icon { width: 18px; height: 18px; flex-shrink: 0; }
.login-error {
    margin-top: 1rem;
    padding: 0.6rem 0.75rem;
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: 8px;
    color: #ef4444;
    font-size: 0.825rem;
}

/* ============================================================
   Dashboard
   ============================================================ */

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 0.5rem;
}
@media (max-width: 900px) {
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .dashboard-grid { grid-template-columns: 1fr; }
}
.dash-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.25rem;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--text);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: border-color 0.15s, transform 0.15s;
}
.dash-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    color: var(--text);
}
.dash-card-icon { font-size: 1.75rem; }
.dash-card-title {
    font-size: 1rem;
    font-weight: 600;
}
.dash-card-sub {
    font-size: 0.825rem;
    color: var(--text-muted);
    flex: 1;
}
.dash-card-soon {
    opacity: 0.5;
    border-style: dashed;
}
.dash-card-soon:hover {
    opacity: 0.75;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-overlay.show {
        display: block;
    }
    .mobile-header {
        display: flex;
    }
    .main-content {
        margin-left: 0;
        padding: 1rem;
        padding-top: calc(52px + 1rem);
    }
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}