:root {
    --bg: #f4f6fb;
    --panel: #ffffff;
    --panel-2: #f8fafd;
    --border: #dbe1ee;
    --border-strong: #c3cbdd;
    --text-primary: #1c2333;
    --text-secondary: #5d6980;
    --accent: #2563eb;
    --accent-soft: rgba(37, 99, 235, 0.09);
    --success: #15803d;
    --warning: #f59e0b;
    --danger: #dc2626;
    --barber-1: #2563eb;
    --barber-2: #7c3aed;
    --barber-3: #0d9488;
    --barber-4: #db2777;
    --barber-5: #ea580c;
    --break: rgba(245, 158, 11, 0.16);
    --grid-line: #e8ecf5;
}

* {
    box-sizing: border-box;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Login ---------- */

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1.5rem;
    background: radial-gradient(circle at 50% 0%, #ffffff 0%, var(--bg) 70%);
}

.login-card {
    width: min(420px, 100%);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: 0 30px 60px -35px rgba(37, 99, 235, 0.35);
    overflow: hidden;
}

.login-header {
    padding: 2rem 2rem 0.75rem;
    text-align: center;
}

.login-header h1 {
    margin: 0 0 0.35rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.login-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.25rem 2rem 1.75rem;
}

.login-form label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
}

.login-footer {
    padding: 0 2rem 1.75rem;
    text-align: center;
    color: var(--text-secondary);
}

.alert {
    margin: 0 2rem 0.75rem;
    padding: 0.7rem 0.9rem;
    border-radius: 0.7rem;
    border: 1px solid var(--border);
    background: var(--panel-2);
    font-size: 0.92rem;
}

.alert-error {
    border-color: rgba(220, 38, 38, 0.35);
    background: rgba(220, 38, 38, 0.06);
    color: var(--danger);
}

.alert-success {
    border-color: rgba(21, 128, 61, 0.35);
    background: rgba(21, 128, 61, 0.06);
    color: var(--success);
}

/* ---------- Header ---------- */

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
    padding: 0.9rem 1.75rem;
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.header-left h1 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    white-space: nowrap;
}

.date-nav {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-btn {
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text-secondary);
    border-radius: 0.6rem;
    padding: 0.4rem 0.7rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
}

.nav-btn:hover {
    color: var(--accent);
    border-color: rgba(37, 99, 235, 0.4);
    background: var(--accent-soft);
}

.today-btn {
    font-weight: 500;
    color: var(--text-primary);
}

#datePicker {
    background: var(--panel);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 0.6rem;
    padding: 0.4rem 0.7rem;
    font-size: 0.92rem;
}

.header-right {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-right: 0.35rem;
}

.user-info strong {
    color: var(--text-primary);
}

/* ---------- Buttons ---------- */

.btn {
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text-primary);
    border-radius: 0.6rem;
    padding: 0.45rem 0.9rem;
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    cursor: pointer;
    text-decoration: none;
    transition: background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.btn:hover {
    border-color: rgba(37, 99, 235, 0.45);
    background: var(--accent-soft);
}

.btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

.btn.primary:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

.btn.primary-soft {
    background: #eef3ff;
    border-color: rgba(37, 99, 235, 0.35);
    color: var(--accent);
}

.btn.primary-soft:hover {
    background: #e2ebff;
}

.share-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.btn.danger {
    background: var(--panel);
    color: var(--danger);
    border-color: rgba(220, 38, 38, 0.35);
}

.btn.danger:hover {
    background: rgba(220, 38, 38, 0.07);
    border-color: rgba(220, 38, 38, 0.6);
}

.btn.full {
    width: 100%;
}

/* ---------- Calendar ---------- */

.calendar-wrapper {
    padding: 0.85rem 1.75rem 2rem;
}

.calendar-legend {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0 0.25rem 0.6rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.calendar-legend span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.calendar-legend .lg {
    width: 11px;
    height: 11px;
    border-radius: 3px;
    display: inline-block;
    border: 1px solid var(--border-strong);
}

.calendar-legend .lg-free {
    background: #e2f7e7;
    border-color: rgba(21, 128, 61, 0.4);
}

.calendar-legend .lg-busy {
    background: #f5f8ff;
    border-left: 3px solid var(--barber-1);
}

.calendar-legend .lg-break {
    background: repeating-linear-gradient(-45deg, #fffdf6, #fffdf6 3px, var(--break) 3px, var(--break) 6px);
    border-color: rgba(245, 158, 11, 0.5);
}

.calendar-legend .lg-hint {
    margin-left: auto;
    color: #8a94a8;
}

.calendar-scroll {
    overflow: auto;
    border-radius: 0.9rem;
    border: 1px solid var(--border);
    background: var(--panel);
    box-shadow: 0 24px 50px -40px rgba(28, 35, 51, 0.4);
    max-height: calc(100vh - 130px);
}

.calendar-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    min-width: 880px;
}

.calendar-table thead th {
    position: sticky;
    top: 0;
    background: var(--panel-2);
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 0.75rem 0.9rem;
    border-bottom: 1px solid var(--border);
    z-index: 4;
}

.calendar-table thead th:first-child {
    text-align: right;
    padding-right: 1rem;
}

.time-col {
    width: 80px;
}

.barber-header {
    display: flex;
    align-items: center;
}

.barber-header .name {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.92rem;
}

.barber-header .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.45rem;
    vertical-align: middle;
}

.calendar-table tbody td {
    border-right: 1px solid var(--grid-line);
    border-bottom: 1px solid var(--grid-line);
    vertical-align: top;
    height: 62px;
    padding: 0;
    position: relative;
}

.calendar-table tbody td:first-child {
    text-align: right;
    padding: 0.35rem 0.9rem 0 0;
    font-size: 0.82rem;
    color: var(--text-secondary);
    border-right: 1px solid var(--border);
    background: var(--panel-2);
    white-space: nowrap;
}

.calendar-table tbody tr:last-child td {
    border-bottom: none;
}

.calendar-table tbody td:last-child {
    border-right: none;
}

.slot {
    width: 100%;
    height: 100%;
    min-height: 62px;
    position: relative;
    cursor: pointer;
}

.slot-free {
    background: #f1fbf3;
}

.slot-free:hover {
    background: #e2f7e7;
    box-shadow: inset 0 0 0 1px rgba(21, 128, 61, 0.35);
}

.slot-busy {
    background: #fbfcfe;
    cursor: default;
}

.slot-break {
    background: repeating-linear-gradient(
        -45deg,
        #fffdf6,
        #fffdf6 6px,
        var(--break) 6px,
        var(--break) 12px
    );
    cursor: pointer;
}

.appointment-card {
    position: absolute;
    left: 4px;
    right: 4px;
    overflow: hidden;
    border-radius: 0.6rem;
    padding: 0.35rem 0.55rem;
    display: flex;
    flex-direction: column;
    gap: 0.05rem;
    background: #ffffff;
    border: 1px solid var(--border-strong);
    border-left-width: 4px;
    box-shadow: 0 6px 16px -10px rgba(28, 35, 51, 0.45);
    cursor: pointer;
    z-index: 3;
    transition: box-shadow 120ms ease;
}

.appointment-card:hover {
    box-shadow: 0 10px 22px -12px rgba(28, 35, 51, 0.5);
}

.appointment-card .appt-time {
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

.appointment-card .appt-customer {
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 42px;
}

.appt-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--accent);
    background: #eef3ff;
    border-radius: 999px;
    padding: 1px 6px;
    border: 1px solid rgba(37, 99, 235, 0.25);
}

.appointment-card .appt-service,
.appointment-card .appt-phone,
.appointment-card .appt-note {
    font-size: 0.78rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.appointment-card[data-barber="1"] {
    border-left-color: var(--barber-1);
    background: #f5f8ff;
}

.appointment-card[data-barber="2"] {
    border-left-color: var(--barber-2);
    background: #f8f5ff;
}

.appointment-card[data-barber="3"] {
    border-left-color: var(--barber-3);
    background: #f2fbf9;
}

.appointment-card[data-barber="4"] {
    border-left-color: var(--barber-4);
    background: #fff5fa;
}

.appointment-card[data-barber="5"] {
    border-left-color: var(--barber-5);
    background: #fff7f2;
}

/* ---------- Modals ---------- */

dialog {
    border: none;
    padding: 0;
    background: transparent;
    max-width: 100vw;
}

dialog::backdrop {
    background: rgba(28, 35, 51, 0.35);
    backdrop-filter: blur(2px);
}

.modal-form {
    width: min(660px, 94vw);
    max-height: 90vh;
    overflow: auto;
    border-radius: 0.9rem;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text-primary);
    box-shadow: 0 40px 70px -40px rgba(28, 35, 51, 0.55);
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.4rem;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--panel);
    z-index: 2;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
}

.icon-btn {
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0.35rem 0.5rem;
    border-radius: 0.5rem;
}

.icon-btn:hover {
    background: var(--panel-2);
    border-color: var(--border);
    color: var(--text-primary);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    padding: 1.25rem 1.4rem;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
}

.form-row label {
    flex: 1 1 180px;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
}

.form-row label.full {
    flex: 1 1 100%;
}

input,
select,
textarea {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 0.55rem;
    color: var(--text-primary);
    padding: 0.5rem 0.7rem;
    font-size: 0.92rem;
    font-family: inherit;
    width: 100%;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

textarea {
    resize: vertical;
    min-height: 76px;
}

.required {
    color: var(--danger);
}

.hint {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.modal-footer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1.4rem;
    border-top: 1px solid var(--border);
    background: var(--panel-2);
    position: sticky;
    bottom: 0;
}

.footer-spacer {
    flex: 1;
}

/* ---------- Lists (breaks & barbers) ---------- */

.break-list-wrap,
.barber-list-wrap {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.4rem;
}

.break-list-wrap h3,
.barber-list-wrap h3 {
    margin: 0;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.break-list,
.barber-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.break-list li,
.barber-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.6rem 0.85rem;
    border-radius: 0.6rem;
    border: 1px solid var(--border);
    background: var(--panel-2);
    font-size: 0.9rem;
}

.break-list .meta,
.barber-list .meta {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.break-list .meta small {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.barber-list .meta small {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.barber-list .meta .muted {
    color: #8a94a8;
    font-size: 0.78rem;
}

.list-actions {
    display: flex;
    gap: 0.35rem;
    flex-shrink: 0;
}

/* ---------- Toast ---------- */

.toast {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translate(-50%, 1rem);
    background: #1c2333;
    color: #ffffff;
    padding: 0.6rem 1.1rem;
    border-radius: 0.6rem;
    font-size: 0.9rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease, transform 180ms ease;
    z-index: 100;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .app-header {
        padding: 0.8rem 1rem;
    }

    .header-left {
        gap: 0.75rem;
    }

    .calendar-wrapper {
        padding: 0.9rem 1rem 1.5rem;
    }

    .header-right {
        justify-content: flex-start;
    }

    .user-info {
        width: 100%;
        margin: 0;
    }
}