:root {
    color-scheme: dark;
    --bg: #15171c;
    --card-bg: #1e212a;
    --card-bg-alt: #262a35;
    --border: #343845;
    --text: #e8eaf0;
    --text-muted: #9aa0ad;
    --primary: #5b8cff;
    --primary-dark: #7ba0ff;
    --danger: #ff6b70;
    --danger-bg: #3a1f22;
    --today-bg: #1e2a4a;
    --radius: 10px;
    --shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { text-decoration: none; color: inherit; }

.btn {
    border: 1px solid var(--border);
    background: var(--card-bg);
    border-radius: 8px;
    padding: 8px 14px;
    font-size: 14px;
    cursor: pointer;
    color: var(--text);
    transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--card-bg-alt); }
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 600;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: transparent; }
.btn-danger { background: var(--card-bg); border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: var(--danger-bg); }
.btn-icon { padding: 6px 12px; font-size: 18px; line-height: 1; }

/* ---------- Login ---------- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1b2440 0%, #0a0c12 100%);
}
.login-card {
    background: var(--card-bg);
    padding: 36px 32px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.login-card h1 { margin: 0 0 2px; font-size: 22px; text-align: center; }
.login-subtitle { margin: 0 0 14px; text-align: center; color: var(--text-muted); font-size: 14px; }
.login-card label { font-size: 13px; font-weight: 600; margin-top: 6px; }
.login-card input {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    background: var(--card-bg-alt);
    color: var(--text);
}
.login-card button {
    margin-top: 14px;
    padding: 11px;
    border-radius: 8px;
    border: none;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
}
.login-card button:hover { background: var(--primary-dark); }
.login-error {
    background: var(--danger-bg);
    color: var(--danger);
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13px;
}

/* ---------- Top bar ---------- */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.user-pill {
    background: var(--today-bg);
    color: var(--primary-dark);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* ---------- App / Calendar ---------- */
.app { max-width: 1100px; margin: 0 auto; padding: 18px; }

.calendar-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 14px;
}
.nav-group { display: flex; gap: 6px; }
.month-label { margin: 0; font-size: 19px; text-transform: capitalize; }
.toolbar-actions { display: flex; align-items: center; gap: 12px; }
.sync-status { font-size: 12px; color: #2fae63; font-weight: 600; }
.sync-status.offline { color: var(--danger); }

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 6px;
}
.weekday-header {
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    padding-bottom: 4px;
    text-transform: uppercase;
}
.day-cell {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 100px;
    min-width: 0;
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: default;
    overflow: hidden;
}
.day-cell.other-month { background: var(--bg); opacity: 0.5; }
.day-cell.today { background: var(--today-bg); border-color: var(--primary); }
.day-cell-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.day-number { font-size: 13px; font-weight: 600; }
.day-add-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 15px;
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
    border-radius: 4px;
}
.day-add-btn:hover { background: var(--border); color: var(--primary-dark); }

.appointment-chip {
    font-size: 11.5px;
    padding: 3px 6px;
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.more-link {
    font-size: 11px;
    color: var(--primary-dark);
    cursor: pointer;
    font-weight: 600;
}

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 25, 40, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    z-index: 50;
}
.modal-overlay.hidden { display: none; }
.modal {
    background: var(--card-bg);
    border-radius: 14px;
    width: 100%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}
.modal-header h3 { margin: 0; font-size: 17px; }

#appointmentForm label, #appointmentForm textarea, #appointmentForm input {
    display: block;
    width: 100%;
}
#appointmentForm label { font-size: 13px; font-weight: 600; margin: 10px 0 4px; }
#appointmentForm input, #appointmentForm textarea {
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background: var(--card-bg-alt);
    color: var(--text);
}
#appointmentForm input::placeholder, #appointmentForm textarea::placeholder { color: var(--text-muted); }
#appointmentForm input[type="color"] { padding: 2px; height: 36px; cursor: pointer; }
.form-row { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }

.meta-info { font-size: 11.5px; color: var(--text-muted); margin-top: 10px; min-height: 14px; }

.modal-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
}
.modal-actions-right { display: flex; gap: 8px; }
.form-error {
    margin-top: 10px;
    background: var(--danger-bg);
    color: var(--danger);
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13px;
}
.hidden { display: none !important; }

/* ---------- Mi cuenta ---------- */
.account-page { display: flex; justify-content: center; }
.account-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px;
    width: 100%;
    max-width: 380px;
}
.account-card h2 { margin: 0 0 4px; font-size: 19px; }
.account-card label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 4px; }
.account-card input {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    background: var(--card-bg-alt);
    color: var(--text);
}
.account-submit { width: 100%; margin-top: 18px; }
.form-success {
    margin-top: 10px;
    background: #163a28;
    color: #4ade80;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13px;
}

.day-modal-list { display: flex; flex-direction: column; gap: 8px; max-height: 50vh; overflow-y: auto; }
.day-modal-item {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 10px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.day-modal-item:hover { background: var(--card-bg-alt); }
.day-modal-item-title { font-weight: 600; font-size: 14px; }
.day-modal-item-time { font-size: 12px; color: var(--text-muted); }

@media (max-width: 720px) {
    .day-cell { min-height: 72px; padding: 4px; }
    .form-row { grid-template-columns: 1fr; }
    .month-label { font-size: 16px; }
    .app { padding: 10px; }
    .weekday-header { font-size: 10px; }
    .appointment-chip { text-align: center; padding: 3px 2px; }
    .appointment-chip .chip-label { display: none; }
}