:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --accent: #0ea5e9;
    --bg-gradient-start: #f8fafc;
    --bg-gradient-end: #e2e8f0;
    --card-bg: rgba(255, 255, 255, 0.9);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --error: #ef4444;
    --success: #10b981;
    --radius: 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background: linear-gradient(160deg, var(--bg-gradient-start), var(--bg-gradient-end));
    min-height: 100vh;
}

.page {
    max-width: 640px;
    margin: 0 auto;
    padding: 32px 20px 64px;
}

.page.wide {
    max-width: 900px;
}

.brand {
    text-align: center;
    margin-bottom: 24px;
}

.brand img {
    max-width: 320px;
    width: 100%;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
    padding: 32px;
    animation: fade-in-up 0.35s ease;
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3 {
    line-height: 1.25;
}

h1 { font-size: 1.6rem; margin-top: 0; }
h2 { font-size: 1.25rem; }

p.subtitle {
    color: var(--text-muted);
    margin-top: -8px;
}

.steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.steps span.active {
    color: var(--primary);
    font-weight: 600;
}

.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.92rem;
}

input[type=text], input[type=email], input[type=tel], input[type=number],
input[type=password], input[type=date], input[type=time], select, textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    font-size: 1rem;
    font-family: inherit;
    background: #fff;
}

input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--primary);
    outline-offset: 1px;
}

textarea { resize: vertical; min-height: 100px; }

.hint { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

.btn {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 13px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s, transform 0.1s;
}

.btn:hover { background: var(--primary-hover); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn.btn-block { width: 100%; }
.btn.btn-outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn.btn-danger { background: var(--error); }
.btn.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

.radio-group { display: flex; flex-direction: column; gap: 10px; }

.radio-card {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
}

.radio-card input { accent-color: var(--primary); }
.radio-card.selected, .radio-card:has(input:checked) { border-color: var(--primary); background: #eff6ff; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.alert {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 0.92rem;
}

.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.summary-row.total { font-weight: 700; font-size: 1.1rem; border-bottom: none; padding-top: 14px; }

.day-tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; margin-bottom: 16px; }

.day-tab {
    flex: 0 0 auto;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    text-align: center;
    font-size: 0.85rem;
}

.day-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }

.slot-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }

.slot-btn {
    padding: 10px 8px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    font-size: 0.85rem;
}

.slot-btn.suggested { border-color: var(--success); }
.slot-btn:hover, .slot-btn.selected { background: var(--primary); color: #fff; border-color: var(--primary); }

.session-choice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 24px; }

@media (max-width: 640px) {
    .session-choice-grid, .grid-2 { grid-template-columns: 1fr; }
    .slot-grid { grid-template-columns: repeat(2, 1fr); }
    .card { padding: 22px; }
}

.session-choice-card {
    display: block;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px 20px;
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
    transition: transform 0.15s;
}

.session-choice-card:hover { transform: translateY(-4px); }
.session-choice-card .icon { font-size: 2.2rem; margin-bottom: 10px; }
.session-choice-card h2 { margin-bottom: 6px; }
.session-choice-card p { color: var(--text-muted); font-size: 0.92rem; }

.file-upload {
    border: 2px dashed var(--border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    cursor: pointer;
}

.nav-links { text-align: center; margin-top: 20px; font-size: 0.9rem; }
.nav-links a { color: var(--primary); text-decoration: none; margin: 0 8px; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.data-table th, table.data-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
table.data-table th { color: var(--text-muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.badge-confirmed, .badge-completed { background: #f0fdf4; color: #166534; }
.badge-pending { background: #fffbeb; color: #92400e; }
.badge-cancelled { background: #fef2f2; color: #991b1b; }
.badge-remote { background: #eff6ff; color: #1e40af; }
.badge-onsite { background: #faf5ff; color: #6b21a8; }