/* ============================================================
   RF Partner Access Modal, shared styles
   A warm access gate for partner-only (built) curriculum units.
   Teacher enters an access code + a short intake; a valid code
   unlocks the track on that device. Used on web-design.html
   (and any page with locked partner unit cards).
   ============================================================ */

.rf-modal-overlay {
    position: fixed; inset: 0; z-index: 1000;
    background: rgba(10, 14, 26, 0.6); backdrop-filter: blur(3px);
    display: none; align-items: center; justify-content: center; padding: 1.5rem;
}
.rf-modal-overlay.open { display: flex; }

.rf-modal {
    background: #fff; border-radius: 18px; width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto; box-shadow: 0 24px 70px rgba(10,14,26,0.45);
    animation: rf-modal-pop 0.25s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}
@keyframes rf-modal-pop { from { opacity: 0; transform: translateY(12px) scale(0.98); } to { opacity: 1; transform: none; } }

.rf-modal-head {
    background: linear-gradient(135deg, var(--rf-blue), var(--rf-purple), var(--rf-pink));
    color: #fff; padding: 1.5rem 1.75rem 1.35rem; border-radius: 18px 18px 0 0; position: relative;
}
.rf-modal-head h3 { margin: 0 0 0.35rem; font-size: 1.3rem; color: #fff; }
.rf-modal-head p { margin: 0; font-size: 0.9rem; opacity: 0.92; line-height: 1.5; }
.rf-modal-close {
    position: absolute; top: 0.9rem; right: 1rem; background: rgba(255,255,255,0.2);
    border: none; color: #fff; width: 32px; height: 32px; border-radius: 50%;
    font-size: 1.1rem; line-height: 1; cursor: pointer; transition: background 0.2s;
}
.rf-modal-close:hover { background: rgba(255,255,255,0.35); }

.rf-modal-body { padding: 1.5rem 1.75rem 1.75rem; }
.rf-eyebrow { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--rf-purple); margin: 0 0 0.75rem; }

.rf-field { margin-bottom: 0.9rem; }
.rf-field label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--rf-dark); margin-bottom: 0.3rem; }
.rf-field .rf-req { color: var(--rf-pink); }
.rf-field input[type="text"], .rf-field input[type="email"], .rf-field input[type="number"], .rf-field select {
    width: 100%; box-sizing: border-box; border: 1px solid #D1D5DB; border-radius: 9px;
    padding: 0.6rem 0.75rem; font-family: var(--font-body); font-size: 0.92rem; color: var(--rf-dark); background: #fff;
}
.rf-field input:focus, .rf-field select:focus { outline: none; border-color: var(--rf-blue); box-shadow: 0 0 0 3px rgba(107,155,209,0.15); }
.rf-field-code input { letter-spacing: 0.08em; font-weight: 600; text-transform: uppercase; }

.rf-help { font-size: 0.78rem; color: var(--rf-gray); line-height: 1.45; margin: 0 0 0.5rem; }
.rf-row { display: flex; gap: 0.75rem; }
.rf-row > .rf-field { flex: 1; }

.rf-submit {
    width: 100%; margin-top: 0.4rem; background: linear-gradient(135deg, var(--rf-blue), var(--rf-purple), var(--rf-pink));
    color: #fff; border: none; border-radius: 50px; padding: 0.85rem 1.5rem; font-weight: 700; font-size: 1rem;
    cursor: pointer; box-shadow: 0 4px 18px rgba(107,155,209,0.3); transition: box-shadow 0.2s;
}
.rf-submit:hover { box-shadow: 0 8px 28px rgba(181,101,216,0.4); }
.rf-submit:disabled { opacity: 0.6; cursor: not-allowed; }

.rf-modal-msg { font-size: 0.85rem; line-height: 1.5; margin: 0.75rem 0 0; padding: 0.6rem 0.8rem; border-radius: 9px; display: none; }
.rf-modal-msg.show { display: block; }
.rf-modal-msg.err { background: rgba(233,30,99,0.08); border: 1px solid rgba(233,30,99,0.3); color: #9F1239; }
.rf-modal-msg.ok { background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.35); color: #166534; }

.rf-modal-foot { margin-top: 1rem; padding-top: 0.9rem; border-top: 1px solid #eee; font-size: 0.85rem; color: var(--rf-gray); text-align: center; }
.rf-modal-foot a { color: var(--rf-blue); font-weight: 600; }

/* Locked partner cards become clickable + show an "unlock" affordance */
.unit-card.coming-soon.rf-partner { cursor: pointer; opacity: 1; }
.unit-card.coming-soon.rf-partner::after { content: 'PARTNER ACCESS'; background: var(--rf-purple); }
.unit-card.coming-soon.rf-partner:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--rf-purple); transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
/* Once unlocked on this device */
.unit-card.coming-soon.rf-unlocked::after { content: 'UNLOCKED'; background: #16A34A; }