@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,500;0,600;0,700;1,500;1,600&family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  --sage: #5C7A5F;
  --sage-dark: #3D5C40;
  --sage-mid: #7A9E7E;
  --sage-light: #C8DBC9;
  --sage-pale: #EBF3EC;
  --bej: #F5EFE6;
  --bej-dark: #E0D4C3;
  --gold: #B8882A;
  --gold-light: #D4A84C;
  --gold-pale: #F7EDD8;
  --warm-white: #FDFAF6;
  --text-dark: #2C3A2E;
  --text-mid: #5A6E5C;
  --text-muted: #8A9E8C;
  --border: #DDE8DE;
  --red: #C0392B;
  --red-pale: #FDECEA;
  --sidebar-w: 240px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'DM Sans', sans-serif; background: var(--warm-white); color: var(--text-dark); font-size: 14px; }
h1,h2,h3,h4 { font-family: 'Cormorant Garamond', serif; font-weight: 700; }

/* LAYOUT */
.app-layout { display: flex; min-height: 100vh; }

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-w); background: var(--text-dark); display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; height: 100vh; z-index: 50; overflow-y: auto;
}
.sidebar-logo { padding: 1.5rem 1.25rem 1rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-logo-word { font-family: 'Cormorant Garamond', serif; font-size: 1.7rem; font-weight: 700; color: #fff; letter-spacing: 0.16em; }
.sidebar-logo-sub { font-size: 0.52rem; font-weight: 500; color: var(--gold-light); letter-spacing: 0.2em; text-transform: uppercase; margin-top: 2px; }
.sidebar-studio { padding: 0.75rem 1.25rem; background: rgba(255,255,255,0.05); border-bottom: 1px solid rgba(255,255,255,0.06); }
.sidebar-studio-name { font-size: 0.8rem; font-weight: 600; color: var(--sage-light); }
.sidebar-studio-plan { font-size: 0.65rem; color: var(--text-muted); margin-top: 2px; }
.sidebar-nav { padding: 1rem 0; flex: 1; }
.sidebar-section { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.25); padding: 0.85rem 1.25rem 0.35rem; }
.sidebar-item { display: flex; align-items: center; gap: 0.75rem; padding: 0.65rem 1.25rem; color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.82rem; font-weight: 500; transition: all 0.15s; cursor: pointer; border: none; background: none; width: 100%; text-align: left; }
.sidebar-item:hover { background: rgba(255,255,255,0.07); color: #fff; }
.sidebar-item.active { background: rgba(92,122,95,0.25); color: var(--sage-light); border-left: 3px solid var(--sage-mid); }
.sidebar-item svg { flex-shrink: 0; opacity: 0.7; }
.sidebar-item.active svg { opacity: 1; }
.sidebar-footer { padding: 1rem 1.25rem; border-top: 1px solid rgba(255,255,255,0.08); }
.sidebar-user { display: flex; align-items: center; gap: 0.65rem; }
.sidebar-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--sage-dark); display: flex; align-items: center; justify-content: center; font-size: 0.65rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.sidebar-user-name { font-size: 0.8rem; font-weight: 600; color: rgba(255,255,255,0.8); }
.sidebar-user-role { font-size: 0.65rem; color: var(--text-muted); }
.sidebar-signout { font-size: 0.72rem; color: var(--text-muted); cursor: pointer; background: none; border: none; padding: 0.25rem 0; display: block; margin-top: 0.4rem; }
.sidebar-signout:hover { color: var(--red); }

/* MAIN CONTENT */
.main-content { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-height: 100vh; }
.topbar { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2rem; background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 40; }
.topbar-title { font-family: 'Cormorant Garamond', serif; font-size: 1.5rem; font-weight: 700; color: var(--text-dark); }
.topbar-sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 1px; }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }
.page-body { padding: 1.75rem 2rem; flex: 1; }

/* CARDS */
.card { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; }
.card-sm { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 1.1rem; }

/* STAT CARDS */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; }
.stat-label { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 0.5rem; }
.stat-value { font-family: 'Cormorant Garamond', serif; font-size: 2rem; font-weight: 700; color: var(--text-dark); line-height: 1; }
.stat-sub { font-size: 0.72rem; color: var(--text-muted); margin-top: 0.4rem; }
.stat-gold .stat-value { color: var(--gold); }
.stat-sage .stat-value { color: var(--sage-dark); }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.6rem 1.25rem; border-radius: 8px; font-size: 0.82rem; font-weight: 600; cursor: pointer; border: none; transition: opacity 0.15s; text-decoration: none; }
.btn:hover { opacity: 0.88; }
.btn-sage { background: var(--sage-dark); color: #fff; }
.btn-gold { background: var(--gold); color: #fff; }
.btn-outline { background: transparent; border: 1.5px solid var(--border); color: var(--text-dark); }
.btn-red { background: var(--red); color: #fff; }
.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.75rem; border-radius: 6px; }
.btn-pill { border-radius: 100px; }

/* BADGES */
.badge { display: inline-block; font-size: 0.65rem; font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 100px; letter-spacing: 0.04em; }
.badge-green { background: #E8F8ED; color: #27AE60; }
.badge-red { background: var(--red-pale); color: var(--red); }
.badge-gold { background: var(--gold-pale); color: var(--gold); }
.badge-gray { background: #F0F0F0; color: #888; }
.badge-sage { background: var(--sage-pale); color: var(--sage-dark); }

/* TABLE */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); padding: 0.65rem 1rem; text-align: left; border-bottom: 1.5px solid var(--border); background: var(--warm-white); }
tbody td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.83rem; vertical-align: middle; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--sage-pale); }
.td-name { font-weight: 600; color: var(--text-dark); }
.td-sub { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }

/* FORMS */
.form-group { margin-bottom: 1.1rem; }
.form-label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-mid); margin-bottom: 0.4rem; }
.form-input { width: 100%; padding: 0.65rem 0.9rem; border: 1.5px solid var(--border); border-radius: 8px; font-family: 'DM Sans', sans-serif; font-size: 0.85rem; color: var(--text-dark); background: #fff; transition: border-color 0.15s; }
.form-input:focus { outline: none; border-color: var(--sage); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A9E8C' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }

/* MODAL */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 200; display: none; align-items: center; justify-content: center; padding: 1rem; }
.modal-overlay.open { display: flex; }
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.2); }
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border); }
.modal-title { font-family: 'Cormorant Garamond', serif; font-size: 1.3rem; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--text-muted); font-size: 1.1rem; padding: 0.25rem; }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; gap: 0.75rem; justify-content: flex-end; }

/* AVATAR */
.avatar { width: 34px; height: 34px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; color: #fff; flex-shrink: 0; }
.avatar-sage { background: var(--sage-dark); }
.avatar-gold { background: var(--gold); }
.avatar-mid { background: var(--sage-mid); }

/* SEARCH BAR */
.search-bar { display: flex; align-items: center; gap: 0.5rem; background: var(--warm-white); border: 1.5px solid var(--border); border-radius: 8px; padding: 0.5rem 0.85rem; }
.search-bar input { border: none; background: transparent; font-size: 0.83rem; color: var(--text-dark); outline: none; width: 220px; }
.search-bar svg { color: var(--text-muted); flex-shrink: 0; }

/* TOAST */
.viva-toast { position: fixed; bottom: 1.5rem; right: 1.5rem; padding: 0.75rem 1.25rem; border-radius: 8px; font-size: 0.83rem; font-weight: 500; z-index: 9999; opacity: 0; transform: translateY(8px); transition: all 0.25s; }
.viva-toast.show { opacity: 1; transform: translateY(0); }
.viva-toast-success { background: var(--sage-dark); color: #fff; }
.viva-toast-error { background: var(--red); color: #fff; }
.viva-toast-info { background: var(--text-dark); color: #fff; }

/* EMPTY STATE */
.empty-state { text-align: center; padding: 3rem 1rem; }
.empty-state-icon { font-size: 2.5rem; margin-bottom: 1rem; opacity: 0.3; }
.empty-state-title { font-family: 'Cormorant Garamond', serif; font-size: 1.3rem; color: var(--text-muted); margin-bottom: 0.4rem; }
.empty-state-sub { font-size: 0.82rem; color: var(--text-muted); }

/* TABS */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn { padding: 0.65rem 1.25rem; font-size: 0.82rem; font-weight: 600; color: var(--text-muted); border: none; background: none; cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all 0.15s; }
.tab-btn.active { color: var(--sage-dark); border-bottom-color: var(--sage-dark); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* CALENDAR WEEK */
.week-grid { display: grid; grid-template-columns: 60px repeat(7,1fr); gap: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.week-header { background: var(--warm-white); padding: 0.5rem; text-align: center; font-size: 0.7rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 1px solid var(--border); }
.week-time-col { font-size: 0.65rem; color: var(--text-muted); padding: 0.3rem 0.4rem; text-align: right; border-right: 1px solid var(--border); }
.week-cell { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); min-height: 48px; padding: 2px; position: relative; }
.week-cell:last-child { border-right: none; }
.class-chip { background: var(--sage-pale); border: 1px solid var(--sage-light); border-left: 3px solid var(--sage-dark); border-radius: 4px; padding: 0.25rem 0.4rem; font-size: 0.65rem; margin-bottom: 2px; cursor: pointer; }
.class-chip:hover { background: var(--sage-light); }
.class-chip-name { font-weight: 600; color: var(--sage-dark); }
.class-chip-time { color: var(--text-muted); }

/* ATTENDANCE STATUS BUTTONS */
.att-btns { display: flex; gap: 0.4rem; }
.att-btn { padding: 0.3rem 0.65rem; border-radius: 6px; font-size: 0.72rem; font-weight: 700; border: 1.5px solid transparent; cursor: pointer; background: #F5F5F5; color: #888; }
.att-btn.selected-attended { background: #E8F8ED; border-color: #27AE60; color: #27AE60; }
.att-btn.selected-absent { background: var(--red-pale); border-color: var(--red); color: var(--red); }
.att-btn.selected-burned { background: var(--gold-pale); border-color: var(--gold); color: var(--gold); }

/* MEASUREMENT TABLE */
.measure-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.75rem; }
.measure-card { background: var(--warm-white); border: 1px solid var(--border); border-radius: 8px; padding: 0.85rem; text-align: center; }
.measure-val { font-family: 'Cormorant Garamond', serif; font-size: 1.5rem; font-weight: 700; color: var(--text-dark); }
.measure-unit { font-size: 0.65rem; color: var(--text-muted); }
.measure-label { font-size: 0.7rem; font-weight: 600; color: var(--text-mid); margin-top: 0.3rem; }
.measure-diff-pos { color: var(--red); font-size: 0.65rem; }
.measure-diff-neg { color: #27AE60; font-size: 0.65rem; }

/* PROGRESS BAR */
.progress-bar { height: 6px; background: var(--border); border-radius: 100px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--sage-dark); border-radius: 100px; transition: width 0.4s; }
.progress-fill-gold { background: var(--gold); }

/* PAYMENT STATUS */
.pay-status-paid { color: #27AE60; font-weight: 600; }
.pay-status-pending { color: var(--gold); font-weight: 600; }
.pay-status-cancelled { color: var(--text-muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .measure-grid { grid-template-columns: repeat(3, 1fr); }
}