:root {
    --bg: #f0f2f5;
    --surface: #ffffff;
    --surface-hover: #f8f9fb;
    --text: #111827;
    --text-2: #6b7280;
    --text-3: #9ca3af;
    --primary: #2563eb;
    --primary-soft: #eff6ff;
    --primary-hover: #1d4ed8;
    --green: #059669;
    --green-soft: #ecfdf5;
    --amber: #d97706;
    --amber-soft: #fffbeb;
    --red: #dc2626;
    --red-soft: #fef2f2;
    --purple: #7c3aed;
    --purple-soft: #f5f3ff;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.08);
    --max-w: 640px;
    --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── Layout ── */
.page { max-width: var(--max-w); margin: 0 auto; padding: 32px 20px 80px; }
.page--wide { --max-w: 1080px; }

/* ── Header ── */
.header { margin-bottom: 32px; }
.header__badge {
    display: inline-block;
    font-size: 11px; font-weight: 600; letter-spacing: 0.8px; text-transform: uppercase;
    color: var(--primary); background: var(--primary-soft);
    padding: 4px 10px; border-radius: 6px; margin-bottom: 12px;
}
.header__title { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; color: var(--text); }
.header__desc { font-size: 14px; color: var(--text-2); margin-top: 6px; max-width: 480px; }

/* ── Form ── */
.form-section {
    background: var(--surface); border: 1px solid var(--border-light);
    border-radius: var(--radius); padding: 24px; margin-bottom: 12px;
}
.form-section__title {
    font-size: 11px; font-weight: 700; letter-spacing: 0.8px; text-transform: uppercase;
    color: var(--text-3); margin-bottom: 20px;
}
.field { margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field label .hint { font-weight: 400; color: var(--text-3); font-size: 12px; }
.field input[type="text"], .field input[type="email"], .field input[type="tel"],
.field textarea, .field select {
    width: 100%; padding: 10px 14px; font-size: 14px; line-height: 1.5;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--surface); color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    font-family: inherit;
}
.field input:focus, .field textarea:focus, .field select:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
.field textarea { resize: vertical; min-height: 80px; }

/* Pills & toggles */
.radio-pills, .checkbox-group { display: flex; gap: 6px; flex-wrap: wrap; }
.radio-pills label, .checkbox-group label {
    cursor: pointer; padding: 7px 14px; font-size: 13px; font-weight: 500;
    border: 1px solid var(--border); border-radius: 20px;
    transition: all var(--transition); user-select: none;
}
.radio-pills label:hover, .checkbox-group label:hover { border-color: var(--text-3); }
.radio-pills label:has(input:checked), .checkbox-group label:has(input:checked) {
    border-color: var(--primary); background: var(--primary); color: #fff;
}
.radio-pills input, .checkbox-group input { display: none; }

.toggle-yn { display: flex; gap: 6px; }
.toggle-yn label {
    flex: 1; text-align: center; cursor: pointer; padding: 8px;
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-size: 13px; font-weight: 500; transition: all var(--transition);
}
.toggle-yn label:has(input:checked) {
    border-color: var(--primary); background: var(--primary); color: #fff;
}
.toggle-yn input { display: none; }

/* ── Buttons ── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 20px; font-size: 13px; font-weight: 600;
    border: none; border-radius: var(--radius-sm); cursor: pointer;
    transition: all var(--transition); font-family: inherit; white-space: nowrap;
}
.btn--primary { background: var(--primary); color: #fff; width: 100%; padding: 12px; }
.btn--primary:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--primary:active { transform: translateY(0); }
.btn--primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.btn--sm { padding: 6px 12px; font-size: 12px; border-radius: 6px; }
.btn--green { background: var(--green); color: #fff; }
.btn--green:hover { background: #047857; }
.btn--red { background: var(--red-soft); color: var(--red); }
.btn--red:hover { background: var(--red); color: #fff; }
.btn--ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border); }
.btn--ghost:hover { border-color: var(--primary); color: var(--primary); }

/* ── Badges ── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; font-weight: 600; padding: 3px 8px;
    border-radius: 6px; letter-spacing: 0.2px;
}
.badge--new { background: var(--primary-soft); color: var(--primary); }
.badge--in_progress { background: var(--amber-soft); color: var(--amber); }
.badge--lecturer_found { background: var(--green-soft); color: var(--green); }
.badge--completed { background: var(--green-soft); color: #065f46; }
.badge--no_speakers { background: var(--red-soft); color: var(--red); }
.badge--pending { background: var(--amber-soft); color: var(--amber); }
.badge--accepted { background: var(--green-soft); color: var(--green); }
.badge--declined { background: var(--red-soft); color: var(--red); }

/* ── Tag (small pill) ── */
.tag {
    display: inline-block; font-size: 11px; font-weight: 500;
    padding: 2px 8px; border-radius: 4px;
    background: var(--border-light); color: var(--text-2);
}

/* ── Success screen ── */
.success-screen { text-align: center; padding: 80px 20px; }
.success-screen__icon {
    width: 56px; height: 56px; border-radius: 50%;
    background: var(--green); color: #fff;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; font-size: 24px;
}
.success-screen__title { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.success-screen__desc { color: var(--text-2); font-size: 14px; max-width: 360px; margin: 0 auto; }

/* ── Table ── */
.app-table { width: 100%; border-collapse: collapse; }
.app-table th {
    text-align: left; padding: 8px 12px; font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-3);
    border-bottom: 1px solid var(--border);
}
.app-table td {
    padding: 10px 12px; border-bottom: 1px solid var(--border-light);
    font-size: 13px; vertical-align: middle;
}
.app-table tr { cursor: pointer; transition: background var(--transition); }
.app-table tr:hover { background: var(--primary-soft); }
.app-table__school { font-weight: 600; color: var(--text); }
.app-table__city { color: var(--text-2); }

/* ── Cards ── */
.card {
    background: var(--surface); border: 1px solid var(--border-light);
    border-radius: var(--radius); padding: 20px; margin-bottom: 12px;
}
.card__header { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.card__title { font-size: 13px; font-weight: 700; letter-spacing: 0.3px; text-transform: uppercase; color: var(--text-3); }
.card__row { display: flex; gap: 8px; margin-bottom: 6px; font-size: 13px; }
.card__label { color: var(--text-3); min-width: 110px; flex-shrink: 0; }
.card__value { color: var(--text); }

/* ── Overlay ── */
.overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.3);
    backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    display: flex; align-items: flex-start; justify-content: center;
    padding: 48px 16px; z-index: 100; overflow-y: auto;
}
.overlay__panel {
    background: var(--surface); border-radius: var(--radius);
    width: 100%; max-width: 680px;
    box-shadow: var(--shadow-lg); padding: 28px; position: relative;
}
.overlay__close {
    position: absolute; top: 16px; right: 16px;
    background: var(--border-light); border: none; border-radius: 8px;
    width: 32px; height: 32px; font-size: 16px; cursor: pointer;
    color: var(--text-2); display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
}
.overlay__close:hover { background: var(--border); color: var(--text); }
.overlay__title { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; margin-bottom: 20px; padding-right: 40px; }

/* ── Stars (rating) ── */
.stars { display: flex; gap: 4px; }
.stars__star {
    width: 36px; height: 36px; border: 1px solid var(--border);
    border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 14px; font-weight: 600;
    transition: all var(--transition);
}
.stars__star:hover { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.stars__star--active { border-color: var(--primary); background: var(--primary); color: #fff; }

/* ── Utility ── */
.mt-4 { margin-top: 4px; } .mt-8 { margin-top: 8px; } .mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.text-center { text-align: center; }
.text-2 { color: var(--text-2); }
.text-3 { color: var(--text-3); }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }
.flex { display: flex; }
.gap-4 { gap: 4px; } .gap-6 { gap: 6px; } .gap-8 { gap: 8px; }
.items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

@media (max-width: 640px) {
    .page { padding: 20px 16px 60px; }
    .header__title { font-size: 20px; }
    .card__row { flex-direction: column; gap: 2px; }
    .card__label { min-width: 0; }
    .overlay { padding: 16px 8px; }
    .overlay__panel { padding: 20px; }
}