:root {
    /* MeetFast logo palette: dark blue (MEET) + bright blue (FAST) */
    --mf-dark: #284168;
    --mf-bright: #388ee6;
    --mf-light: #f0f5fc;
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-soft: #fafbfc;
    --border: #e1e6ec;
    --border-soft: #e8ecf1;
    --text: #1a2332;
    --text-soft: #4a5568;
    --muted: #718096;
    --accent: #388ee6;
    --accent-hover: #2d7dd2;
    --accent-dark: #284168;
    --accent-focus: rgba(56, 142, 230, 0.25);
    --success: #1a7f37;
    --error: #cf222e;
    --radius: 10px;
    --radius-sm: 8px;
    --shadow: 0 2px 8px rgba(40, 65, 104, 0.06);
    --shadow-hover: 0 4px 16px rgba(40, 65, 104, 0.1);
    --transition: 0.2s ease;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.875rem 1.5rem;
    border-bottom: 1px solid var(--border-soft);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 1px 0 var(--border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    transition: box-shadow var(--transition);
}

.site-header::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-soft), transparent);
    opacity: 0.5;
}

.logo {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: opacity var(--transition);
}

.logo:hover {
    opacity: 0.9;
}

.logo-img {
    display: block;
    height: 52px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.header-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.header-nav a:hover {
    color: var(--accent);
    background: var(--mf-light);
}

.header-user {
    font-size: 0.875rem;
    color: var(--text-soft);
    font-weight: 500;
    padding: 0 0.5rem;
}

.content {
    flex: 1;
    padding: 2rem 1.5rem;
    max-width: 560px;
    margin: 0 auto;
    width: 100%;
}

.site-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-soft);
    text-align: center;
    background: var(--surface);
}

.site-footer a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition);
}

.site-footer a:hover {
    color: var(--accent);
}

.hero {
    text-align: center;
}

.hero h1 {
    font-size: 1.875rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.hero p {
    color: var(--text-soft);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
}

.form-card {
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: 14px;
    padding: 1.75rem;
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}

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

.form-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 0;
    margin-bottom: 0.25rem;
    color: var(--text);
}

.form-card .subtitle {
    color: var(--text-soft);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.form-card .description {
    color: var(--text-soft);
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-top: 1rem;
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
    color: var(--text);
    font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="date"],
input[type="time"],
textarea,
select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-focus);
}

input::placeholder,
textarea::placeholder {
    color: var(--muted);
}

textarea {
    resize: vertical;
    min-height: 60px;
}

.hint {
    font-size: 0.85rem;
    color: var(--text-soft);
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

.slot-rows {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.slots .slot-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.625rem 0.875rem;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.slots .slot-row:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-focus);
}

.slot-row input[type="date"] {
    min-width: 130px;
}

.slot-row input[type="time"] {
    min-width: 95px;
}

fieldset {
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin: 1.25rem 0;
    background: var(--surface-soft);
}

fieldset.slots {
    background: var(--surface);
    border-color: var(--border-soft);
}

fieldset legend {
    padding: 0 0.5rem;
    color: var(--text);
    font-weight: 500;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0.5rem 0;
    cursor: pointer;
    color: var(--text);
}

.checkbox-row:hover {
    color: var(--accent);
}

.checkbox-row input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    margin-top: 1rem;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 1px 3px rgba(56, 142, 230, 0.25);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 2px 6px rgba(56, 142, 230, 0.3);
}

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

.btn-secondary:hover {
    background: var(--mf-light);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.85rem;
}

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

.btn-danger {
    background: var(--error);
    color: #fff;
    border: none;
}

.btn-danger:hover {
    background: #a0111f;
}

/* My polls list */
.poll-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.poll-item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    box-shadow: 0 1px 2px rgba(40, 65, 104, 0.04);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.poll-item:hover {
    border-color: var(--border);
    box-shadow: var(--shadow);
}

.poll-item-main {
    min-width: 0;
}

.poll-title {
    display: block;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
    margin-bottom: 0.25rem;
}

.poll-title:hover {
    color: var(--accent);
}

.poll-meta {
    font-size: 0.85rem;
    color: var(--muted);
}

.poll-item-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.poll-item-actions .btn {
    margin-top: 0;
}

.poll-delete-form {
    display: inline;
    margin: 0;
}

.admin-links {
    margin: 0 0 1rem 0;
    font-size: 0.9rem;
}

.admin-links a {
    color: var(--accent);
    text-decoration: none;
    margin-right: 1rem;
    font-weight: 500;
    transition: color var(--transition);
}

.admin-links a:hover {
    color: var(--accent-hover);
}

/* Flash messages */
.flash-messages {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    transition: opacity var(--transition);
}

.flash-success {
    background: #dafbe1;
    border: 1px solid var(--success);
    color: #1a7f37;
}

.flash-error {
    background: #fff5f5;
    border: 1px solid var(--error);
    color: #cf222e;
}

/* Invite by email */
.invite-box {
    margin-top: 1rem;
}

.invite-box .invite-form {
    margin-top: 0.25rem;
}

.invite-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-soft);
    margin-bottom: 0.5rem;
}

.invite-rows {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: 0.5rem;
}

.invite-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.invite-row input[type="text"],
.invite-row input[type="email"] {
    flex: 1;
    min-width: 0;
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
}

.invite-row input[type="text"] {
    max-width: 160px;
}

.invite-row input[type="email"] {
    min-width: 140px;
}

.invite-remove {
    flex-shrink: 0;
    width: 1.75rem;
    height: 1.75rem;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--muted);
    border-radius: 4px;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition), background var(--transition);
}

.invite-remove:hover {
    color: var(--error);
    background: #fff5f5;
}

.invite-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.invite-add {
    padding: 0;
    border: none;
    background: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent);
    cursor: pointer;
    transition: color var(--transition);
}

.invite-add:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.invite-box .btn {
    margin-top: 0;
}

.error {
    color: var(--error);
    margin-bottom: 0.5rem;
}

.share-box {
    margin: 1rem 0;
}

.copy-row {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.copy-row input {
    flex: 1;
}

.responses-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.responses-table th,
.responses-table td {
    padding: 0.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.response-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0;
}

.response-list li {
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--border);
}

.response-list .muted {
    color: var(--muted);
}

.final-time {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--mf-light);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-soft);
}

/* Date range calendar (airline-style picker) */
.date-range-picker {
    margin: 1rem 0;
    padding: 1rem 0;
}

.calendar-range-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    padding: 0 0.25rem;
}

.calendar-month-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.calendar-nav {
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: none;
    background: var(--surface);
    color: var(--text);
    border-radius: 50%;
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s;
}

.calendar-nav:hover {
    background: var(--mf-light);
    color: var(--accent);
}

.calendar-grid-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 360px;
}

@media (max-width: 420px) {
    .calendar-grid-wrap {
        grid-template-columns: 1fr;
        max-width: 280px;
        margin: 0 auto;
    }
}

.calendar-month {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 0.875rem;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow);
    transition: box-shadow var(--transition);
}

.calendar-month:hover {
    box-shadow: var(--shadow-hover);
}

.cal-month-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-soft);
    margin-bottom: 0.5rem;
    text-align: center;
}

.cal-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    margin-bottom: 4px;
}

.cal-wday {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
}

.cal-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
}

.cal-day {
    aspect-ratio: 1;
    min-width: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.cal-day-empty {
    pointer-events: none;
    visibility: hidden;
}

.cal-day:not(.cal-day-empty):not(.cal-day-past):hover {
    background: var(--mf-light);
    color: var(--accent);
}

.cal-day-past {
    color: var(--muted);
    cursor: not-allowed;
    opacity: 0.5;
}

.cal-day-in {
    background: var(--mf-light);
    color: var(--accent);
}

.cal-day-start,
.cal-day-end {
    background: var(--accent);
    color: #fff;
    font-weight: 600;
}

.cal-day-start:hover,
.cal-day-end:hover {
    background: var(--accent-hover);
    color: #fff;
}

.calendar-range-hint {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 0.5rem 0 0;
    padding: 0 0.25rem;
}

/* Suggest slots by range */
.suggest-section {
    margin: 1.25rem 0;
    padding: 1.25rem;
    background: var(--surface-soft);
    border-radius: var(--radius);
    border: 1px solid var(--border-soft);
}

.suggest-section h3 {
    margin: 0 0 0.75rem 0;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text);
}

.suggest-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.suggest-row label {
    margin: 0;
    min-width: 4rem;
}

.suggest-row input,
.suggest-row select {
    padding: 0.4rem 0.6rem;
    font-size: 0.95rem;
}

.suggest-row select {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    min-width: 6rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.suggest-row.timezone-row select {
    min-width: 14rem;
    max-width: 100%;
}

.generated-slots {
    margin-top: 0.75rem;
    padding: 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border-soft);
    box-shadow: 0 1px 2px rgba(40, 65, 104, 0.04);
}

.slot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.slot-chip {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text);
    transition: border-color var(--transition), background var(--transition);
}

.slot-chip:hover {
    border-color: var(--accent);
    background: var(--mf-light);
}

.slot-chip input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.slot-chip input:checked + .slot-chip-label {
    font-weight: 600;
}

.slot-chip.selected {
    border-color: var(--accent);
    background: var(--mf-light);
}

.slot-day-group {
    margin-bottom: 1rem;
}

.slot-day-group:last-child {
    margin-bottom: 0;
}

.slot-day-group h4 {
    margin: 0 0 0.5rem 0;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-soft);
}

.slot-day-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.generated-slots .checkbox-row {
    margin: 0.35rem 0;
}

.slot-row span.to {
    color: var(--muted);
    font-size: 0.9rem;
}

.slot-remove {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: 1px solid var(--border-soft);
    background: var(--surface);
    color: var(--muted);
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.slot-remove:hover {
    border-color: var(--error);
    color: var(--error);
    background: #fff5f5;
}

/* Google Calendar connect */
.calendar-connect {
    margin: 0.75rem 0;
    padding: 1rem 1.25rem;
    background: var(--mf-light);
    border: 1px solid rgba(56, 142, 230, 0.25);
    border-radius: var(--radius);
    transition: border-color var(--transition), background var(--transition);
}

.calendar-connect.connected {
    border-color: var(--success);
    background: #e6f7eb;
}

.calendar-connect p {
    margin: 0 0 0.5rem 0;
    font-size: 0.9rem;
    color: var(--text);
}

.calendar-connect .btn-google {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition), transform 0.15s ease;
}

.calendar-connect .btn-google:hover {
    background: var(--accent-hover);
}

.calendar-connect .disconnect {
    margin-left: 0.5rem;
    font-size: 0.85rem;
    color: var(--muted);
}

.calendar-connect .not-configured {
    font-size: 0.85rem;
    color: var(--muted);
}

.calendar-choose {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-soft);
}

.calendar-choose-label {
    margin: 0 0 0.5rem 0;
    font-size: 0.9rem;
    color: var(--text);
}

.calendar-list {
    margin-top: 0.5rem;
    max-height: 180px;
    overflow-y: auto;
    padding: 0.5rem;
    background: var(--surface);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
}

.calendar-list .calendar-checkbox {
    margin: 0.35rem 0;
}

/* Login / Signup */
.auth-card {
    max-width: 360px;
}

.auth-divider {
    text-align: center;
    margin: 1rem 0 0.5rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.auth-footer {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--text-soft);
}

.auth-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
}

.auth-footer a:hover {
    color: var(--accent-hover);
}

.auth-card .btn-google {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.625rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.auth-card .btn-google:hover {
    background: var(--mf-light);
    border-color: var(--accent);
    color: var(--accent);
}

/* ========== Responsive: tablet and below ========== */
@media (max-width: 768px) {
    .site-header {
        padding: 0.625rem 1rem;
        gap: 0.5rem;
    }

    .logo-img {
        height: 44px;
        max-width: 180px;
    }

    .header-nav {
        gap: 0.125rem;
    }

    .header-nav a {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }

    .header-user {
        font-size: 0.8rem;
        padding: 0 0.25rem;
        max-width: 120px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .content {
        padding: 1.25rem 1rem;
    }

    .form-card {
        padding: 1.25rem;
    }

    .form-card h1 {
        font-size: 1.35rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 0.95rem;
    }

    .suggest-section {
        padding: 1rem;
    }

    .calendar-grid-wrap {
        gap: 1rem;
    }
}

/* ========== Responsive: phone ========== */
@media (max-width: 480px) {
    .site-header {
        flex-direction: column;
        align-items: stretch;
        padding: 0.5rem 0.75rem;
    }

    .logo {
        justify-content: flex-start;
    }

    .logo-img {
        height: 40px;
        max-width: 160px;
    }

    .header-nav {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 0.25rem;
    }

    .header-nav a {
        font-size: 0.8125rem;
        padding: 0.5rem 0.625rem;
    }

    .header-user {
        max-width: none;
        order: -1;
        width: 100%;
        padding: 0.25rem 0 0.5rem;
        border-bottom: 1px solid var(--border-soft);
        margin-bottom: 0.25rem;
    }

    .content {
        padding: 1rem 0.75rem;
    }

    .form-card {
        padding: 1rem;
        border-radius: var(--radius-sm);
    }

    .form-card h1 {
        font-size: 1.25rem;
    }

    .form-card .subtitle {
        font-size: 0.85rem;
    }

    .hero h1 {
        font-size: 1.35rem;
    }

    .hero p {
        font-size: 0.9rem;
        margin-bottom: 1.25rem;
    }

    /* Touch-friendly buttons */
    .btn {
        padding: 0.75rem 1.25rem;
        min-height: 44px;
    }

    .btn-small {
        min-height: 36px;
        padding: 0.375rem 0.625rem;
    }

    /* Slot row: stack date/time on small screens */
    .slots .slot-row {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .slot-row input[type="date"],
    .slot-row input[type="time"] {
        min-width: 0;
        width: 100%;
    }

    .slot-row span.to {
        display: none;
    }

    .slot-remove {
        align-self: flex-end;
    }

    /* Copy / share row: stack */
    .copy-row {
        flex-direction: column;
    }

    .copy-row input {
        min-width: 0;
    }

    /* Table: horizontal scroll on mobile */
    .responses-table-wrap {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 1rem 0;
    }

    .responses-table {
        min-width: 320px;
    }

    .responses-table th,
    .responses-table td {
        padding: 0.5rem 0.375rem;
        font-size: 0.9rem;
    }

    /* Poll list: stack and larger tap targets */
    .poll-item {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
    }

    .poll-item-main {
        margin-bottom: 0.25rem;
    }

    .poll-item-actions {
        padding-top: 0.5rem;
        border-top: 1px solid var(--border-soft);
    }

    .poll-item-actions .btn {
        flex: 1;
        min-width: 0;
        justify-content: center;
    }

    .admin-links {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .admin-links a {
        margin-right: 0;
    }

    /* Suggest row: full width controls */
    .suggest-row {
        flex-direction: column;
        align-items: stretch;
    }

    .suggest-row label {
        min-width: 0;
    }

    .suggest-row.timezone-row select {
        min-width: 0;
        width: 100%;
    }

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

    .calendar-range-header {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .calendar-month-label {
        font-size: 0.9rem;
    }

    .invite-row {
        flex-direction: column;
        align-items: stretch;
    }

    .invite-row input[type="text"] {
        max-width: none;
    }

    .invite-row input[type="email"] {
        min-width: 0;
    }

    .invite-remove {
        align-self: flex-end;
    }

    .auth-card {
        max-width: none;
    }
}

/* ========== Responsive: very small phones ========== */
@media (max-width: 360px) {
    .content {
        padding: 0.75rem 0.5rem;
    }

    .form-card {
        padding: 0.875rem;
    }

    .logo-img {
        max-width: 140px;
    }

    .cal-days,
    .cal-weekdays {
        gap: 1px;
    }

    .cal-day {
        font-size: 0.75rem;
    }

    .cal-wday {
        font-size: 0.65rem;
    }
}