/* ══════════════════════════════════════════════════
   SmartHome Wartungs-App – Design System
   Mobile-first | Dark Mode | Glassmorphism
   ══════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;600&display=swap');

/* ── CSS Custom Properties ──────────────────────── */
:root {
    /* Background */
    --bg-primary:     #0f1117;
    --bg-secondary:   #1a1d26;
    --bg-card:        #1e2230;
    --bg-card-hover:  #252a3a;
    --bg-elevated:    #262b3a;
    --bg-input:       #161922;
    --bg-overlay:     rgba(0, 0, 0, 0.65);

    /* Accent */
    --accent:         #00d4aa;
    --accent-hover:   #00f0c0;
    --accent-dim:     rgba(0, 212, 170, 0.12);
    --accent-glow:    rgba(0, 212, 170, 0.25);

    /* Status */
    --status-success:   #22c55e;
    --status-warning:   #f59e0b;
    --status-error:     #ef4444;
    --status-neutral:   #6b7280;
    --status-info:      #3b82f6;

    /* Text */
    --text-primary:     #f1f5f9;
    --text-secondary:   #94a3b8;
    --text-muted:       #64748b;
    --text-inverse:     #0f1117;

    /* Border */
    --border-subtle:    rgba(255, 255, 255, 0.06);
    --border-default:   rgba(255, 255, 255, 0.10);
    --border-focus:     var(--accent);

    /* Effects */
    --glass-bg:         rgba(30, 34, 48, 0.75);
    --glass-blur:       blur(16px);
    --shadow-sm:        0 1px 3px rgba(0,0,0,0.3);
    --shadow-md:        0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg:        0 8px 32px rgba(0,0,0,0.4);
    --shadow-glow:      0 0 24px var(--accent-glow);

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;

    /* Radius */
    --radius-sm:  6px;
    --radius-md:  10px;
    --radius-lg:  16px;
    --radius-xl:  20px;
    --radius-full: 50%;

    /* Transition */
    --ease:       cubic-bezier(0.4, 0, 0.2, 1);
    --duration:   200ms;
    --duration-md: 300ms;
    --duration-lg: 500ms;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

input, button, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ── Scrollbar ──────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ── Utilities ──────────────────────────────────── */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); border: 0;
}

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none !important; }

/* ── Background Pattern ─────────────────────────── */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 170, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(59, 130, 246, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ══════════════════════════════════════════════════
   COMPONENTS
   ══════════════════════════════════════════════════ */

/* ── Cards ──────────────────────────────────────── */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--duration) var(--ease),
                box-shadow var(--duration) var(--ease),
                border-color var(--duration) var(--ease);
}

.card:hover {
    border-color: var(--border-default);
}

.card-elevated {
    background: var(--bg-elevated);
    border-color: var(--border-default);
}

/* ── Buttons ────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.65rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
    text-decoration: none;
    line-height: 1;
    user-select: none;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; pointer-events: none; }

.btn-primary {
    background: var(--accent);
    color: var(--text-inverse);
    box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 20px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-default);
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-danger {
    background: var(--status-error);
    color: white;
}
.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover {
    background: var(--accent-dim);
    color: var(--accent);
}

.btn-icon {
    padding: 0.5rem;
    min-width: 36px;
    min-height: 36px;
}

.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; }
.btn-lg { padding: 0.85rem 1.75rem; font-size: 1rem; }
.btn-block { width: 100%; }

/* ── Inputs ─────────────────────────────────────── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--duration) var(--ease);
}

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

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--status-error);
}

/* ── Toggle Switch ──────────────────────────────── */
.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
    user-select: none;
}

.toggle input { display: none; }

.toggle-track {
    width: 48px;
    height: 26px;
    background: var(--bg-elevated);
    border: 2px solid var(--border-default);
    border-radius: 13px;
    position: relative;
    transition: all var(--duration-md) var(--ease);
}

.toggle-track::after {
    content: '';
    position: absolute;
    top: 2px; left: 2px;
    width: 18px; height: 18px;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: all var(--duration-md) var(--ease);
}

.toggle input:checked + .toggle-track {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle input:checked + .toggle-track::after {
    transform: translateX(22px);
    background: white;
}

/* ── Large Toggle (Wartungsmodus) ────────────────── */
.toggle-xl .toggle-track {
    width: 72px;
    height: 38px;
    border-radius: 19px;
}

.toggle-xl .toggle-track::after {
    width: 30px; height: 30px;
    top: 2px; left: 2px;
}

.toggle-xl input:checked + .toggle-track::after {
    transform: translateX(34px);
}

/* ── Badges ─────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 0.2rem 0.6rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-radius: var(--radius-sm);
}

.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--status-success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--status-warning); }
.badge-error   { background: rgba(239, 68, 68, 0.15); color: var(--status-error); }
.badge-neutral { background: rgba(107, 114, 128, 0.15); color: var(--status-neutral); }
.badge-info    { background: rgba(59, 130, 246, 0.15); color: var(--status-info); }
.badge-accent  { background: var(--accent-dim); color: var(--accent); }

/* ── Progress Bar ───────────────────────────────── */
.progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-primary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar .fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), var(--status-success));
    transition: width var(--duration-lg) var(--ease);
}

/* ── Toast / Notifications ──────────────────────── */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 280px;
    animation: slideInRight var(--duration-md) var(--ease);
    font-size: 0.9rem;
}

.toast-success { border-left: 3px solid var(--status-success); }
.toast-error   { border-left: 3px solid var(--status-error); }
.toast-info    { border-left: 3px solid var(--status-info); }

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to   { transform: translateX(100%); opacity: 0; }
}

/* ── Modal ──────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    animation: fadeIn var(--duration) var(--ease);
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 100%;
    max-width: 480px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: scaleIn var(--duration-md) var(--ease);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    padding: 4px;
    transition: color var(--duration) var(--ease);
}

.modal-close:hover { color: var(--text-primary); }

.modal-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    margin-top: var(--space-lg);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes scaleIn {
    from { transform: scale(0.92); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

/* ══════════════════════════════════════════════════
   LOGIN PAGE
   ══════════════════════════════════════════════════ */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100dvh;
    padding: var(--space-lg);
    position: relative;
    z-index: 1;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-brand {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.login-brand-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    display: block;
    border-radius: var(--radius-lg);
    object-fit: contain;
}

.login-brand h1 {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--status-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.login-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--space-xs);
}

.login-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
}

.login-card .form-group:last-of-type {
    margin-bottom: var(--space-md);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.remember-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.remember-row label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.login-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    color: var(--status-error);
    font-size: 0.85rem;
    margin-bottom: var(--space-md);
    display: none;
}

.login-error.show { display: block; }

/* Password Strength */
.pw-strength {
    margin-top: var(--space-sm);
}

.pw-strength-bar {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-xs);
}

.pw-strength-bar span {
    flex: 1;
    height: 4px;
    background: var(--bg-elevated);
    border-radius: 2px;
    transition: background var(--duration) var(--ease);
}

.pw-strength[data-strength="1"] span:nth-child(1) { background: var(--status-error); }
.pw-strength[data-strength="2"] span:nth-child(-n+2) { background: var(--status-warning); }
.pw-strength[data-strength="3"] span:nth-child(-n+3) { background: var(--status-success); }
.pw-strength[data-strength="4"] span { background: var(--accent); }

.pw-strength-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.pw-checks {
    list-style: none;
    margin-top: var(--space-sm);
    font-size: 0.8rem;
}

.pw-checks li {
    color: var(--text-muted);
    padding: 2px 0;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.pw-checks li.pass { color: var(--status-success); }
.pw-checks li::before {
    content: '○';
    font-size: 0.6rem;
}
.pw-checks li.pass::before {
    content: '●';
}

/* ══════════════════════════════════════════════════
   DASHBOARD LAYOUT
   ══════════════════════════════════════════════════ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    position: relative;
    z-index: 1;
}

/* Top Bar */
.topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--space-sm) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.1rem;
}

.topbar-logo {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    object-fit: contain;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.topbar-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--accent-dim);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: var(--space-lg);
    padding-bottom: 100px; /* space for bottom nav */
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

/* ── Bottom Navigation ──────────────────────────── */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-around;
    padding: var(--space-sm) 0;
    padding-bottom: calc(var(--space-sm) + env(safe-area-inset-bottom, 0));
}

.bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--space-xs) var(--space-md);
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--duration) var(--ease);
    position: relative;
}

.bottom-nav a .nav-icon {
    font-size: 1.35rem;
    line-height: 1;
}

.bottom-nav a.active {
    color: var(--accent);
}

.bottom-nav a.active::after {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

.bottom-nav a:hover {
    color: var(--accent);
}

/* ══════════════════════════════════════════════════
   VIEWS
   ══════════════════════════════════════════════════ */

.view {
    display: none;
    animation: fadeSlideIn var(--duration-md) var(--ease);
}

.view.active {
    display: block;
}

@keyframes fadeSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Section Headers ────────────────────────────── */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.section-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
}

/* ══════════════════════════════════════════════════
   DASHBOARD VIEW
   ══════════════════════════════════════════════════ */

/* Maintenance Mode Banner */
.maintenance-banner {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 212, 170, 0.05) 100%);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    text-align: center;
}

.maintenance-banner h2 {
    font-size: 1.2rem;
    margin-bottom: var(--space-md);
}

.maintenance-banner.active {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.06) 0%, rgba(0, 212, 170, 0.02) 100%);
    box-shadow: 0 0 40px rgba(0, 212, 170, 0.08);
}

.maintenance-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-md);
}

.maintenance-timer {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.05em;
}

.pulse-dot {
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: var(--radius-full);
    animation: pulse 2s var(--ease) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 0 0 var(--accent-glow); }
    50%      { opacity: 0.7; transform: scale(1.1); box-shadow: 0 0 12px 4px var(--accent-glow); }
}

/* Quick Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: border-color var(--duration) var(--ease);
}

.stat-card:hover { border-color: var(--border-default); }

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-xs);
}

/* Recent Maintenance List */
.recent-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.recent-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.recent-item:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.recent-item-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.recent-item-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ══════════════════════════════════════════════════
   CHECKLIST VIEW (Active Maintenance)
   ══════════════════════════════════════════════════ */

.checklist-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.checklist-progress {
    width: 100%;
}

.checklist-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

/* Category Accordion */
.category-accordion {
    margin-bottom: var(--space-md);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--duration) var(--ease);
}

.category-accordion:hover {
    border-color: var(--border-default);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    cursor: pointer;
    user-select: none;
    transition: background var(--duration) var(--ease);
}

.category-header:hover {
    background: var(--bg-card-hover);
}

.category-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

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

.category-info h3 {
    font-size: 1rem;
    font-weight: 600;
}

.category-progress {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.category-chevron {
    color: var(--text-muted);
    transition: transform var(--duration) var(--ease);
    font-size: 1.2rem;
}

.category-accordion.open .category-chevron {
    transform: rotate(180deg);
}

.category-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-lg) var(--ease);
}

.category-accordion.open .category-body {
    max-height: 2000px;
}

/* Task Item */
.task-item {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    transition: background var(--duration) var(--ease);
}

.task-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.task-item.subtask {
    padding-left: calc(var(--space-lg) + var(--space-xl));
    background: rgba(0, 0, 0, 0.15);
}

.task-item.completed .task-name {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-item.error .task-name {
    color: var(--status-error);
}

.task-name {
    flex: 1;
    min-width: 0;
}

.task-name h4 {
    font-size: 0.9rem;
    font-weight: 500;
}

.task-name .task-note {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.task-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.task-status-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: all var(--duration) var(--ease);
}

.task-status-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.task-status-btn.active-completed {
    background: var(--status-success);
    border-color: var(--status-success);
    color: white;
}

.task-status-btn.active-not-required {
    background: var(--status-neutral);
    border-color: var(--status-neutral);
    color: white;
}

.task-status-btn.active-error {
    background: var(--status-error);
    border-color: var(--status-error);
    color: white;
}

.task-status-btn.disabled {
    opacity: 0.3;
    pointer-events: none;
}

/* ══════════════════════════════════════════════════
   ADMIN VIEW (Categories & Tasks Management)
   ══════════════════════════════════════════════════ */

.admin-category {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.admin-category-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    cursor: pointer;
    transition: background var(--duration) var(--ease);
}

.admin-category-header:hover {
    background: var(--bg-card-hover);
}

.admin-category-header .edit-controls {
    display: flex;
    gap: var(--space-xs);
    margin-left: auto;
}

.admin-category-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-lg) var(--ease);
}

.admin-category.open .admin-category-body {
    max-height: 3000px;
}

.admin-task-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-top: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}

.admin-task-item.subtask {
    padding-left: calc(var(--space-lg) + var(--space-xl));
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.admin-task-item .task-text { 
    flex: 1; 
    min-width: 0; 
}

.admin-task-item .task-text .note {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.admin-task-item .task-controls {
    display: flex;
    gap: var(--space-xs);
}

.add-row {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--border-subtle);
}

.inline-add {
    display: flex;
    gap: var(--space-sm);
}

.inline-add input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    outline: none;
}

.inline-add input:focus {
    border-color: var(--accent);
}

/* Active/Inactive toggle */
.active-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--status-success);
    flex-shrink: 0;
}

.active-dot.inactive {
    background: var(--status-neutral);
}

/* ══════════════════════════════════════════════════
   HISTORY VIEW
   ══════════════════════════════════════════════════ */

.history-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.history-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.history-item:hover {
    border-color: var(--accent);
    transform: translateX(4px);
}

.history-number {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent);
    min-width: 40px;
    text-align: center;
}

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

.history-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.history-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.history-meta {
    text-align: right;
    flex-shrink: 0;
}

.history-meta .duration {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* ══════════════════════════════════════════════════
   SETTINGS VIEW
   ══════════════════════════════════════════════════ */

.settings-section {
    margin-bottom: var(--space-xl);
}

.settings-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.settings-item-info h4 {
    font-size: 0.9rem;
    font-weight: 500;
}

.settings-item-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.build-info {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ══════════════════════════════════════════════════
   FLOATING ACTION BUTTON
   ══════════════════════════════════════════════════ */

.fab {
    position: fixed;
    bottom: 90px;
    right: var(--space-lg);
    z-index: 90;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: var(--accent);
    color: var(--text-inverse);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-glow), var(--shadow-lg);
    transition: all var(--duration) var(--ease);
}

.fab:hover {
    transform: scale(1.08);
    box-shadow: 0 0 32px var(--accent-glow), var(--shadow-lg);
}

.fab:active {
    transform: scale(0.95);
}

/* ── Empty State ────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    font-size: 0.85rem;
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */

@media (min-width: 768px) {
    .main-content {
        padding: var(--space-xl) var(--space-2xl);
    }

    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .bottom-nav {
        max-width: 500px;
        left: 50%;
        transform: translateX(-50%);
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        bottom: 0;
    }
}

@media (min-width: 1024px) {
    .login-container {
        max-width: 420px;
    }

    .main-content {
        padding-bottom: 120px;
    }
}

/* ── Loading Spinner ────────────────────────────── */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-default);
    border-top-color: var(--accent);
    border-radius: var(--radius-full);
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinner-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
}

/* ── Skeleton Loading ───────────────────────────── */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}