:root {
    --color-bg:          #0f0f13;
    --color-surface:     #1a1a24;
    --color-surface-2:   #22222f;
    --color-border:      #2e2e3e;
    --color-text:        #e8e8f0;
    --color-text-muted:  #888899;
    --color-accent:      #7c6af7;
    --color-accent-dim:  #3d3680;
    --color-success:     #34c77b;
    --color-danger:      #e05454;
    --color-warning:     #f0a030;

    --radius:      10px;
    --radius-sm:   6px;
    --spacing-xs:  4px;
    --spacing-sm:  8px;
    --spacing-md:  16px;
    --spacing-lg:  24px;
    --spacing-xl:  40px;

    --font:        'Inter', system-ui, -apple-system, sans-serif;
    --font-mono:   'JetBrains Mono', 'Fira Code', monospace;
}

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

html { font-size: 16px; }

body {
    font-family:      var(--font);
    background-color: var(--color-bg);
    color:            var(--color-text);
    min-height:       100vh;
    line-height:      1.5;
}

[v-cloak] { display: none; }

/* ─── Buttons ─── */

button { cursor: pointer; border: none; font-family: var(--font); font-size: 0.875rem; }

.btn-primary {
    background:    var(--color-accent);
    color:         #fff;
    padding:       10px 20px;
    border-radius: var(--radius-sm);
    font-weight:   600;
    transition:    background 0.15s, opacity 0.15s;
}

.btn-primary:hover   { background: #6b5de6; }
.btn-primary:disabled { opacity: 0.5; cursor: default; }

.btn-ghost {
    background:    transparent;
    color:         var(--color-text-muted);
    padding:       6px 12px;
    border-radius: var(--radius-sm);
    border:        1px solid var(--color-border);
    transition:    color 0.15s, border-color 0.15s;
}

.btn-ghost:hover { color: var(--color-text); border-color: var(--color-text-muted); }
.btn-ghost.danger { color: var(--color-danger); border-color: var(--color-danger); }
.btn-ghost.danger:hover { background: #e0545420; }

/* ─── Topbar ─── */

.topbar {
    display:          flex;
    align-items:      center;
    gap:              var(--spacing-md);
    padding:          0 var(--spacing-lg);
    height:           56px;
    background:       var(--color-surface);
    border-bottom:    1px solid var(--color-border);
    position:         sticky;
    top:              0;
    z-index:          100;
}

.topbar-logo {
    font-size:   1.1rem;
    font-weight: 700;
    color:       var(--color-text);
    flex-shrink: 0;
}

.topbar-nav {
    display: flex;
    gap:     var(--spacing-xs);
    flex:    1;
}

.nav-btn {
    background:    transparent;
    color:         var(--color-text-muted);
    padding:       6px 14px;
    border-radius: var(--radius-sm);
    font-weight:   500;
    transition:    color 0.15s, background 0.15s;
}

.nav-btn:hover  { color: var(--color-text); background: var(--color-surface-2); }
.nav-btn.active { color: var(--color-accent); background: var(--color-accent-dim); }

.topbar-user {
    display:     flex;
    align-items: center;
    gap:         var(--spacing-sm);
    font-size:   0.85rem;
    color:       var(--color-text-muted);
    flex-shrink: 0;
}

/* ─── Layout ─── */

.main-content {
    max-width: 900px;
    margin:    0 auto;
    padding:   var(--spacing-lg);
}

.page-header {
    display:         flex;
    align-items:     baseline;
    justify-content: space-between;
    margin-bottom:   var(--spacing-lg);
    flex-wrap:       wrap;
    gap:             var(--spacing-sm);
}

.page-header h2 {
    font-size:   1.5rem;
    font-weight: 700;
}

.subtitle { color: var(--color-text-muted); font-size: 0.9rem; }

/* ─── Push Banner ─── */

.push-banner {
    display:       flex;
    align-items:   center;
    justify-content: space-between;
    gap:           var(--spacing-md);
    background:    var(--color-accent-dim);
    border:        1px solid var(--color-accent);
    border-radius: var(--radius);
    padding:       var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.push-banner-text {
    display:       flex;
    flex-direction: column;
    gap:           var(--spacing-xs);
    font-size:     0.9rem;
}

/* ─── Habit Grid (Dashboard) ─── */

.habit-grid {
    display:               grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap:                   var(--spacing-md);
}

.habit-card {
    background:    var(--color-surface);
    border:        1px solid var(--color-border);
    border-radius: var(--radius);
    padding:       var(--spacing-md);
    display:       flex;
    flex-direction: column;
    gap:           var(--spacing-sm);
    transition:    border-color 0.2s;
}

.habit-card.done    { border-color: var(--color-success); }
.habit-card.skipped { border-color: var(--color-border); opacity: 0.6; }

.habit-card-header {
    display:         flex;
    justify-content: space-between;
    align-items:     center;
}

.habit-time {
    font-family: var(--font-mono);
    font-size:   0.8rem;
    color:       var(--color-text-muted);
    background:  var(--color-surface-2);
    padding:     2px 8px;
    border-radius: var(--radius-sm);
}

.habit-streak {
    font-size:  0.85rem;
    font-weight: 600;
}

.habit-name {
    font-size:   1rem;
    font-weight: 600;
}

.habit-desc {
    font-size: 0.85rem;
    color:     var(--color-text-muted);
}

/* ─── 14-day Calendar ─── */

.habit-calendar {
    display: flex;
    gap:     3px;
    flex-wrap: wrap;
}

.cal-day {
    width:         14px;
    height:        14px;
    border-radius: 3px;
    background:    var(--color-surface-2);
}

.cal-day.done    { background: var(--color-success); }
.cal-day.skipped { background: var(--color-border); }
.cal-day.future  { background: var(--color-surface-2); opacity: 0.3; }
.cal-day.missed  { background: var(--color-danger); opacity: 0.35; }

/* ─── Habit Action Buttons ─── */

.habit-actions {
    display:   flex;
    gap:       var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.btn-complete, .btn-skip {
    flex:          1;
    padding:       8px;
    border-radius: var(--radius-sm);
    font-weight:   500;
    font-size:     0.85rem;
    transition:    background 0.15s, opacity 0.15s;
}

.btn-complete {
    background: var(--color-success);
    color:      #0f1f18;
}

.btn-complete:hover    { background: #2ab56a; }
.btn-complete:disabled { opacity: 0.4; cursor: default; }

.btn-skip {
    background: var(--color-surface-2);
    color:      var(--color-text-muted);
    border:     1px solid var(--color-border);
}

.btn-skip:hover    { background: var(--color-border); }
.btn-skip:disabled { opacity: 0.4; cursor: default; }

/* ─── Habit List (Manage View) ─── */

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

.habit-row {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    gap:             var(--spacing-md);
    background:      var(--color-surface);
    border:          1px solid var(--color-border);
    border-radius:   var(--radius);
    padding:         var(--spacing-md);
    flex-wrap:       wrap;
}

.habit-row-info {
    display:     flex;
    align-items: center;
    gap:         var(--spacing-md);
}

.habit-row-time {
    font-family: var(--font-mono);
    font-size:   0.85rem;
    color:       var(--color-text-muted);
    min-width:   40px;
}

.habit-status-badge {
    display:       inline-block;
    font-size:     0.72rem;
    font-weight:   600;
    padding:       2px 8px;
    border-radius: 20px;
    margin-left:   var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.habit-status-badge.active { background: #34c77b22; color: var(--color-success); }
.habit-status-badge.paused { background: #f0a03022; color: var(--color-warning); }

.habit-row-actions {
    display: flex;
    gap:     var(--spacing-sm);
    flex-wrap: wrap;
}

/* ─── Auth Pages ─── */

.auth-container {
    max-width:  420px;
    margin:     var(--spacing-xl) auto;
    padding:    var(--spacing-lg);
}

.auth-logo {
    text-align:    center;
    margin-bottom: var(--spacing-xl);
}

.logo-icon   { font-size: 3rem; display: block; margin-bottom: var(--spacing-sm); }
.auth-logo h1 { font-size: 2rem; font-weight: 800; margin-bottom: var(--spacing-xs); }
.auth-logo p  { color: var(--color-text-muted); }

.auth-form {
    display:        flex;
    flex-direction: column;
    gap:            var(--spacing-md);
    background:     var(--color-surface);
    border:         1px solid var(--color-border);
    border-radius:  var(--radius);
    padding:        var(--spacing-lg);
}

.auth-form .btn-primary { width: 100%; padding: 12px; font-size: 1rem; }

.auth-switch {
    text-align:  center;
    margin-top:  var(--spacing-md);
    color:       var(--color-text-muted);
    font-size:   0.9rem;
}

.auth-switch a { color: var(--color-accent); text-decoration: none; }
.auth-switch a:hover { text-decoration: underline; }

/* ─── Forms ─── */

.field {
    display:        flex;
    flex-direction: column;
    gap:            var(--spacing-xs);
}

.field label {
    font-size:   0.85rem;
    font-weight: 500;
    color:       var(--color-text-muted);
}

.field input,
.field textarea,
.field select {
    background:    var(--color-surface-2);
    border:        1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color:         var(--color-text);
    font-family:   var(--font);
    font-size:     0.9rem;
    padding:       10px 12px;
    transition:    border-color 0.15s;
    width:         100%;
}

.field input:focus,
.field textarea:focus {
    outline:      none;
    border-color: var(--color-accent);
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-error {
    background:    #e0545420;
    border:        1px solid var(--color-danger);
    border-radius: var(--radius-sm);
    color:         var(--color-danger);
    font-size:     0.85rem;
    padding:       8px 12px;
}

/* ─── Day Picker ─── */

.day-picker {
    display: flex;
    gap:     var(--spacing-xs);
    flex-wrap: wrap;
}

.day-toggle {
    cursor: pointer;
}

.day-toggle input { display: none; }

.day-toggle span {
    display:       block;
    padding:       6px 10px;
    border-radius: var(--radius-sm);
    border:        1px solid var(--color-border);
    color:         var(--color-text-muted);
    font-size:     0.8rem;
    font-weight:   500;
    transition:    all 0.15s;
}

.day-toggle input:checked + span {
    background:   var(--color-accent);
    border-color: var(--color-accent);
    color:        #fff;
}

/* ─── Modal ─── */

.modal-overlay {
    position:   fixed;
    inset:      0;
    background: rgba(0, 0, 0, 0.65);
    display:    flex;
    align-items: center;
    justify-content: center;
    z-index:    200;
    padding:    var(--spacing-md);
}

.modal {
    background:    var(--color-surface);
    border:        1px solid var(--color-border);
    border-radius: var(--radius);
    width:         100%;
    max-width:     520px;
    max-height:    90vh;
    overflow-y:    auto;
    padding:       var(--spacing-lg);
    display:       flex;
    flex-direction: column;
    gap:           var(--spacing-md);
}

.modal-header {
    display:         flex;
    justify-content: space-between;
    align-items:     center;
}

.modal-header h3 { font-size: 1.1rem; font-weight: 700; }

.modal-close {
    background:    transparent;
    color:         var(--color-text-muted);
    font-size:     1rem;
    padding:       4px 8px;
    border-radius: var(--radius-sm);
}

.modal-close:hover { color: var(--color-text); background: var(--color-surface-2); }

.modal form {
    display:        flex;
    flex-direction: column;
    gap:            var(--spacing-md);
}

.modal-footer {
    display:         flex;
    justify-content: flex-end;
    gap:             var(--spacing-sm);
    padding-top:     var(--spacing-sm);
    border-top:      1px solid var(--color-border);
}

/* ─── Empty State ─── */

.empty-state {
    text-align: center;
    padding:    var(--spacing-xl);
    color:      var(--color-text-muted);
    display:    flex;
    flex-direction: column;
    align-items: center;
    gap:        var(--spacing-md);
}

/* ─── Responsive ─── */

@media (max-width: 600px) {
    .topbar { padding: 0 var(--spacing-md); gap: var(--spacing-sm); }
    .topbar-user span { display: none; }
    .main-content { padding: var(--spacing-md); }
    .field-row { grid-template-columns: 1fr; }
    .habit-grid { grid-template-columns: 1fr; }
    .habit-row { flex-direction: column; align-items: flex-start; }
}