/* =========================================================================
   Design tokens
   ========================================================================= */

:root {
    --bg:           #F1F4F8;
    --paper:        #FFFFFF;
    --ink:          #1E293B;
    --ink-soft:     #475569;
    --ink-mute:     #94A3B8;
    --accent:       #2563EB;
    --accent-soft:  rgba(37, 99, 235, 0.10);
    --danger:       #DC2626;
    --warning:      #D97706;
    --success:      #059669;
    --line:         rgba(30, 41, 59, 0.10);
    --line-strong:  rgba(30, 41, 59, 0.22);

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;

    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 1rem;
    --text-lg:   1.125rem;
    --text-xl:   1.25rem;
    --text-2xl:  1.5rem;
    --text-3xl:  1.875rem;

    --mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;
    --tap:  44px;

    --radius-sm: 6px;
    --radius:    10px;
    --radius-lg: 16px;

    --nav-height:  56px;
    --top-height:  52px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg:          #0F172A;
        --paper:       #1E293B;
        --ink:         #F1F5F9;
        --ink-soft:    #CBD5E1;
        --ink-mute:    #64748B;
        --accent:      #3B82F6;
        --accent-soft: rgba(59, 130, 246, 0.15);
        --line:        rgba(241, 245, 249, 0.10);
        --line-strong: rgba(241, 245, 249, 0.22);
    }
}

/* =========================================================================
   Reset + base
   ========================================================================= */

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

html { -webkit-text-size-adjust: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--ink);
    background: var(--bg);
    padding-top: var(--top-height);
    padding-bottom: calc(var(--nav-height) + env(safe-area-inset-bottom));
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
input, select, textarea, button { font: inherit; color: inherit; }
button { background: transparent; -webkit-appearance: none; appearance: none; }
textarea { resize: vertical; }

/* =========================================================================
   Topbar
   ========================================================================= */

.topbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--top-height);
    background: var(--bg);
    border-bottom: 0.5px solid var(--line);
    z-index: 100;
    padding-top: env(safe-area-inset-top);
}

.topbar-inner {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-4);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.topbar-logo {
    height: 28px;
    width: 28px;
    border-radius: 6px;
    object-fit: cover;
}

.topbar-name {
    font-weight: 600;
    font-size: var(--text-base);
    letter-spacing: -0.01em;
}

.topbar-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

/* =========================================================================
   Bottom nav
   ========================================================================= */

.bottom-nav {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: calc(var(--nav-height) + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    background: var(--bg);
    border-top: 0.5px solid var(--line);
    display: flex;
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    min-height: var(--tap);
    color: var(--ink-mute);
    font-size: 10px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    font-family: var(--mono);
    transition: color 0.1s;
}

.nav-item-active { color: var(--accent); }
.nav-item:active { opacity: 0.7; }

/* =========================================================================
   Main content
   ========================================================================= */

.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-4);
}

/* =========================================================================
   Flash messages
   ========================================================================= */

.flash-list { margin-bottom: var(--space-4); }

.flash {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
}

.flash-success { background: rgba(5, 150, 105, 0.12); color: #065f46; }
.flash-error   { background: rgba(192, 57, 43, 0.12);  color: var(--danger); }
.flash-info    { background: rgba(42, 31, 26, 0.06);   color: var(--ink-soft); }

@media (prefers-color-scheme: dark) {
    .flash-success { color: #6ee7b7; }
    .flash-error   { color: #fca5a5; }
    .flash-info    { color: var(--ink-soft); }
}

/* =========================================================================
   Page hero
   ========================================================================= */

.page-hero {
    margin-bottom: var(--space-6);
}

.page-hero-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.page-hero-sub {
    margin-top: var(--space-1);
    font-size: var(--text-sm);
    color: var(--ink-soft);
}

/* =========================================================================
   Cards
   ========================================================================= */

.card {
    background: var(--paper);
    border: 0.5px solid var(--line);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

@media (prefers-color-scheme: dark) {
    .card { border-color: rgba(240, 232, 224, 0.12); }
}

.card-header {
    margin-bottom: var(--space-5);
}

.card-header h2 {
    font-size: var(--text-lg);
    font-weight: 600;
}

/* =========================================================================
   Buttons
   ========================================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 18px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: var(--text-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.1s;
    min-height: var(--tap);
}

.btn:active { opacity: 0.8; }

.btn-primary  { background: var(--accent); color: #fff; }
.btn-secondary {
    background: rgba(42, 31, 26, 0.07);
    color: var(--ink);
    border: 0.5px solid var(--line-strong);
}

@media (prefers-color-scheme: dark) {
    .btn-secondary {
        background: rgba(240, 232, 224, 0.08);
        border-color: rgba(240, 232, 224, 0.15);
    }
}

.btn-full { width: 100%; justify-content: center; }

.btn-link        { background: none; border: none; color: var(--accent); cursor: pointer; font-size: var(--text-sm); padding: 0; }
.btn-link-danger { background: none; border: none; color: var(--danger); cursor: pointer; font-size: var(--text-sm); padding: 0; }

.return-btn { margin-top: var(--space-6); }

/* =========================================================================
   Forms
   ========================================================================= */

.form-group { margin-bottom: var(--space-5); }

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--ink-soft);
}

.label-hint    { font-weight: normal; color: var(--ink-mute); }
.label-required { color: var(--danger); }

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--ink);
    font-size: var(--text-base);
    min-height: var(--tap);
}

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

.radio-group { display: flex; flex-direction: column; gap: var(--space-3); }

.radio-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--ink-soft);
    cursor: pointer;
}

.radio-label input { margin-top: 3px; flex-shrink: 0; accent-color: var(--accent); }

/* =========================================================================
   Upcoming feed
   ========================================================================= */

.upcoming-list { display: flex; flex-direction: column; gap: 0; }

.upcoming-group { margin-bottom: var(--space-6); }

.upcoming-group-header {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-mute);
    padding: var(--space-1) 0 var(--space-2);
    margin-bottom: var(--space-2);
    border-bottom: 1px solid var(--line);
}

.group-overdue .upcoming-group-header { color: var(--danger); }

.upcoming-group .upcoming-item + .upcoming-item { margin-top: var(--space-2); }

.upcoming-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--paper);
    border: 0.5px solid var(--line);
    border-radius: var(--radius);
    min-height: var(--tap);
    overflow: hidden;
}

.upcoming-item-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    padding: var(--space-3) var(--space-4);
    min-width: 0;
    transition: opacity 0.1s;
}

.upcoming-item-link:active { opacity: 0.8; }

.upcoming-action-form {
    flex-shrink: 0;
    align-self: stretch;
    display: flex;
}

.upcoming-action-btn {
    background: transparent;
    color: var(--accent);
    border: none;
    border-left: 0.5px solid var(--line);
    padding: 0 var(--space-3);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    width: 5.5rem;
    text-align: center;
    line-height: 1.25;
    align-self: stretch;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s;
}
.upcoming-action-btn:active { background: rgba(0,0,0,0.06); }
@media (prefers-color-scheme: dark) {
    .upcoming-action-btn:active { background: rgba(255,255,255,0.08); }
}

.upcoming-overdue { border-color: rgba(192, 57, 43, 0.3); }
.upcoming-urgent  { border-color: rgba(217, 119, 6, 0.3); }

@media (prefers-color-scheme: dark) {
    .upcoming-item { border-color: rgba(240, 232, 224, 0.12); }
}

.upcoming-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.upcoming-body { flex: 1; min-width: 0; }

.upcoming-title {
    font-size: var(--text-base);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upcoming-meta {
    display: flex;
    gap: var(--space-2);
    margin-top: 2px;
    font-size: var(--text-xs);
    color: var(--ink-mute);
}

.upcoming-date { color: var(--ink-mute); }

.upcoming-days {
    font-family: var(--mono);
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 20px;
    white-space: nowrap;
    flex-shrink: 0;
}

.days-ok      { background: rgba(42,31,26,0.06);     color: var(--ink-mute); }
.days-soon    { background: rgba(217,119,6,0.12);    color: #92400e; }
.days-urgent  { background: rgba(217,119,6,0.2);     color: #78350f; }
.days-overdue { background: rgba(192,57,43,0.15);    color: var(--danger); }
.days-chip    { display: inline-block; }

@media (prefers-color-scheme: dark) {
    .days-ok     { background: rgba(240,232,224,0.08); color: var(--ink-mute); }
    .days-soon   { background: rgba(217,119,6,0.2);    color: #fcd34d; }
    .days-urgent { background: rgba(217,119,6,0.28);   color: #fbbf24; }
    .days-overdue{ background: rgba(192,57,43,0.25);   color: #fca5a5; }
}

/* =========================================================================
   Reminders list
   ========================================================================= */

.reminder-group { margin-bottom: var(--space-6); }

.reminder-group-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--ink-soft);
}

.reminder-cat-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.reminder-cat-name { flex: 1; }

.reminder-cat-count {
    font-family: var(--mono);
    font-size: var(--text-xs);
    color: var(--ink-mute);
}

.reminder-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 0.5px solid var(--line);
}

.reminder-row:last-child { border-bottom: none; }

.reminder-row-body { flex: 1; min-width: 0; }

.reminder-title {
    font-size: var(--text-base);
    font-weight: 500;
}

.reminder-meta {
    display: flex;
    gap: var(--space-2);
    margin-top: 2px;
    font-size: var(--text-xs);
    color: var(--ink-mute);
    flex-wrap: wrap;
}

.reminder-recurrence,
.reminder-has-notes {
    font-family: var(--mono);
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(42,31,26,0.06);
    color: var(--ink-mute);
}

.reminder-row-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-2);
    flex-shrink: 0;
}

.reminder-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* =========================================================================
   Settings rows (More page)
   ========================================================================= */

.settings-section { margin-bottom: var(--space-6); }

.settings-section-title {
    font-family: var(--mono);
    font-size: var(--text-xs);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: var(--space-3);
    padding: 0 var(--space-1);
}

.settings-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--paper);
    border: 0.5px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: var(--space-2);
    min-height: var(--tap);
    transition: opacity 0.1s;
}

.settings-row:active { opacity: 0.8; }
.settings-row-danger { color: var(--danger); }

.settings-row-body { flex: 1; }

.settings-row-title { font-weight: 500; font-size: var(--text-base); }

.settings-row-sub {
    font-size: var(--text-xs);
    color: var(--ink-mute);
    margin-top: 2px;
}

@media (prefers-color-scheme: dark) {
    .settings-row { border-color: rgba(240,232,224,0.12); }
}

/* =========================================================================
   Users / admin tables
   ========================================================================= */

.table-scroll-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.users-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.users-table th,
.users-table td {
    padding: 12px 8px;
    border-bottom: 0.5px solid var(--line);
    text-align: left;
    vertical-align: middle;
}
.users-table th {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
}

.role-badge {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 3px;
    white-space: nowrap;
}

.role-admin   { background: var(--accent); color: #fff; }
.role-user    { background: rgba(42,31,26,0.08); color: var(--ink-soft); }
.visit-fresh  { background: var(--success); color: #fff; }
.visit-stayed { background: rgba(42,31,26,0.08); color: var(--ink-soft); }

@media (prefers-color-scheme: dark) {
    .role-user    { background: rgba(240,232,224,0.10); }
    .visit-stayed { background: rgba(240,232,224,0.10); }
}

.you-tag {
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-mute);
    margin-left: 4px;
}

.user-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
    flex-wrap: wrap;
}
.user-actions form { margin: 0; }

.visitors-footnote {
    margin-top: var(--space-3);
    font-size: var(--text-xs);
    color: var(--ink-mute);
}

/* =========================================================================
   Categories page
   ========================================================================= */

.cat-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 0.5px solid var(--line);
    font-size: var(--text-sm);
}
.cat-row:last-child { border-bottom: none; }

/* =========================================================================
   Auth screens
   ========================================================================= */

.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-5);
    background: var(--bg);
}

.auth-card {
    background: var(--paper);
    border: 0.5px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    max-width: 380px;
    width: 100%;
    text-align: center;
}

.auth-logo {
    color: var(--accent);
    margin-bottom: var(--space-4);
    display: flex;
    justify-content: center;
}

.auth-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-1);
}

.auth-sub {
    font-size: var(--text-sm);
    color: var(--ink-soft);
    margin-bottom: var(--space-6);
}

.auth-success {
    background: rgba(5,150,105,0.1);
    color: #065f46;
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
    text-align: left;
}

.auth-error {
    background: rgba(192,57,43,0.1);
    color: var(--danger);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
    text-align: left;
}

.auth-devlink {
    background: rgba(42,31,26,0.05);
    border-radius: var(--radius);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
    text-align: left;
    word-break: break-all;
}

.auth-devlink a { color: var(--accent); text-decoration: underline; }

.auth-card .form-group { text-align: left; }

@media (prefers-color-scheme: dark) {
    .auth-success { color: #6ee7b7; }
    .auth-card { border-color: rgba(240,232,224,0.12); }
}

/* =========================================================================
   Empty state
   ========================================================================= */

.empty-state {
    text-align: center;
    padding: var(--space-10) var(--space-4);
    color: var(--ink-mute);
}

.empty-icon { margin-bottom: var(--space-4); }
.empty-title { font-size: var(--text-lg); font-weight: 600; color: var(--ink-soft); margin-bottom: var(--space-2); }
.empty-sub   { font-size: var(--text-sm); margin-bottom: var(--space-5); }

/* =========================================================================
   Mobile table stack
   ========================================================================= */

@media (max-width: 600px) {
    .users-table,
    .users-table tbody,
    .users-table tr,
    .users-table td  { display: block; width: 100%; }
    .users-table thead { display: none; }
    .users-table tr { padding: 12px 0; border-bottom: 0.5px solid var(--line); }
    .users-table td { padding: 3px 0; border-bottom: none; }
    .user-actions { margin-top: 8px; }
}

/* =========================================================================
   View toggle (List / Calendar)
   ========================================================================= */

.view-toggle {
    display: inline-flex;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-top: var(--space-3);
}

.view-toggle-btn {
    padding: var(--space-1) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--ink-mute);
    background: var(--paper);
    transition: background 0.15s, color 0.15s;
}

.view-toggle-btn + .view-toggle-btn {
    border-left: 1px solid var(--line);
}

.view-toggle-btn-active {
    background: var(--accent);
    color: #fff;
}

/* =========================================================================
   Calendar
   ========================================================================= */

.cal-wrap {
    padding: 0 var(--space-3) var(--space-6);
    max-width: 700px;
    margin: 0 auto;
}

.cal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
}

.cal-nav-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--ink);
    margin: 0;
}

.cal-nav-btn {
    font-size: 1.6rem;
    line-height: 1;
    color: var(--accent);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: background 0.1s;
}
.cal-nav-btn:active { background: var(--accent-soft); }

.cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.cal-header {
    background: var(--bg);
    text-align: center;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-mute);
    padding: var(--space-2) 0;
}

.cal-day {
    background: var(--paper);
    height: 90px;
    overflow: hidden;
    padding: var(--space-1);
    vertical-align: top;
}

.cal-empty { background: var(--bg); }

.cal-day-header {
    display: block;
    width: 100%;
    margin-bottom: 2px;
}

.cal-day-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ink-mute);
    width: 20px;
    height: 20px;
}

.cal-today .cal-day-num {
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
}

.cal-chip {
    display: block;
    font-size: 0.6rem;
    line-height: 1.3;
    padding: 1px 3px;
    border-radius: 3px;
    color: #fff;
    margin-bottom: 2px;
    word-break: break-word;
    opacity: 0.92;
}
.cal-chip:active { opacity: 0.7; }

.cal-more {
    font-size: 0.6rem;
    color: var(--ink-mute);
    padding-left: 3px;
}

@media (prefers-color-scheme: dark) {
    .cal-header { background: var(--bg); }
    .cal-day    { background: var(--paper); }
    .cal-empty  { background: var(--bg); }
}