/* ============================================
   Alliance AI — Checkout & Pricing Page Styles
   Extends styles.css (must be loaded after it)
   ============================================ */

/* ── Checkout Page Body ───────────────────────── */
body.checkout-page {
    background: var(--bg);
}

/* ── Checkout Hero ────────────────────────────── */
.checkout-main {
    padding-top: 0;
}

.checkout-hero {
    position: relative;
    padding: 140px 0 80px;
    overflow: hidden;
    text-align: center;
}

.checkout-hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
}

.checkout-hero-title {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    letter-spacing: -0.03em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--white) 0%, rgba(255,255,255,0.7) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.checkout-hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 540px;
    margin: 0 auto 40px;
}

/* ── Billing Toggle ────────────────────────────── */
.billing-toggle-wrap {
    display: flex;
    justify-content: center;
    margin-top: 8px;
}

.billing-toggle {
    display: inline-flex;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 4px;
    gap: 4px;
}

.billing-toggle-btn {
    padding: 8px 24px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    color: var(--text-muted);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    border: none;
    background: none;
}

.billing-toggle-btn.active {
    background: var(--primary);
    color: var(--bg);
    box-shadow: 0 0 20px var(--primary-glow);
}

.billing-toggle-btn:not(.active):hover {
    color: var(--white);
    background: rgba(255,255,255,0.06);
}

.billing-badge {
    background: var(--primary-dim);
    color: var(--primary);
    border: 1px solid rgba(45, 157, 166, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.billing-toggle-btn.active .billing-badge {
    background: rgba(0, 0, 0, 0.2);
    color: var(--bg);
    border-color: transparent;
}

/* ── Pricing Section ───────────────────────────── */
.checkout-pricing-section {
    padding: 60px 0 80px;
}

.checkout-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
    max-width: 1080px;
    margin: 0 auto;
}

/* ── Pricing Card ──────────────────────────────── */
.checkout-pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 32px 32px;
    position: relative;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.checkout-pricing-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.checkout-pricing-card-popular {
    border-color: var(--primary);
    background: linear-gradient(160deg, rgba(45, 157, 166, 0.08) 0%, var(--bg-card) 60%);
    box-shadow: 0 0 40px rgba(45, 157, 166, 0.12);
}

.checkout-pricing-card-popular:hover {
    border-color: var(--primary);
    box-shadow: 0 20px 60px rgba(45, 157, 166, 0.2);
}

.checkout-popular-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), #0094b8);
    color: var(--bg);
    font-size: 0.78rem;
    font-weight: 700;
    font-family: 'Inter', sans-serif;
    padding: 4px 16px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ── Card Header ───────────────────────────────── */
.checkout-card-header {
    text-align: center;
    margin-bottom: 28px;
}

.checkout-card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.checkout-card-icon-primary {
    background: var(--primary-dim);
    border: 1px solid rgba(45, 157, 166, 0.2);
    color: var(--primary);
}

.checkout-card-icon-gradient {
    background: linear-gradient(135deg, var(--primary-dim), var(--accent-dim));
    border: 1px solid rgba(45, 157, 166, 0.2);
    color: var(--primary);
}

.checkout-plan-name {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--white);
}

.checkout-plan-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.checkout-price-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.checkout-price-display .price-amount {
    font-size: 3rem;
    font-weight: 800;
    font-family: 'Inter', sans-serif;
    color: var(--white);
    line-height: 1;
    letter-spacing: -0.03em;
}

.checkout-price-display .price-period {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.price-savings {
    display: inline-block;
    background: var(--primary-dim);
    color: var(--primary);
    border: 1px solid rgba(45, 157, 166, 0.25);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 3px 10px;
    margin-bottom: 10px;
}

.checkout-promo-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: rgba(45, 157, 166, 0.1);
    color: var(--primary);
    border: 1px solid rgba(45, 157, 166, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 12px;
    margin-top: 8px;
}

.checkout-promo-badge-accent {
    background: var(--primary-dim);
    color: var(--primary);
    border-color: rgba(45, 157, 166, 0.2);
}

/* ── Feature List ──────────────────────────────── */
.checkout-features {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.checkout-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text);
}

.checkout-feature.not-included {
    color: var(--text-dim);
    text-decoration: line-through;
    opacity: 0.6;
}

.checkout-feature svg {
    flex-shrink: 0;
}

/* ── CTA Button (extends .btn) ─────────────────── */
.btn-block {
    width: 100%;
    justify-content: center;
    text-align: center;
    padding: 14px 24px;
    font-size: 1rem;
}

.checkout-subscribe-btn {
    margin-top: auto;
    transition: var(--transition);
}

.checkout-subscribe-btn:disabled,
.checkout-subscribe-btn.btn-loading {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

.checkout-card-note {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-dim);
    margin-top: 10px;
}

/* ── Checkout Spinner ──────────────────────────── */
.checkout-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 4px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ── Toast Notifications ───────────────────────── */
.checkout-toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    animation: toastIn 0.3s var(--ease) forwards;
    max-width: 480px;
    width: calc(100% - 48px);
}

@keyframes toastIn {
    from { opacity: 0; transform: translate(-50%, 16px); }
    to   { opacity: 1; transform: translate(-50%, 0); }
}

.checkout-toast-error {
    background: var(--bg-card);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

.checkout-toast-success {
    background: var(--bg-card);
    border: 1px solid var(--primary-glow);
    color: var(--primary);
}

.toast-close {
    margin-left: auto;
    font-size: 1.2rem;
    line-height: 1;
    opacity: 0.6;
    transition: opacity 0.2s;
    cursor: pointer;
    flex-shrink: 0;
}
.toast-close:hover { opacity: 1; }

/* ── Modal ─────────────────────────────────────── */
.checkout-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: fadeIn 0.2s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.checkout-modal {
    background: var(--bg-card);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    max-width: 480px;
    width: 100%;
    text-align: center;
    position: relative;
    animation: modalSlideUp 0.3s var(--ease) forwards;
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.checkout-modal-close {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 1.5rem;
    color: var(--text-dim);
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}
.checkout-modal-close:hover { color: var(--white); }

.checkout-modal-icon {
    width: 72px;
    height: 72px;
    background: var(--primary-dim);
    border: 1px solid rgba(45, 157, 166, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.checkout-modal h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: var(--white);
}

.checkout-modal p {
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 28px;
    font-size: 0.95rem;
}

.checkout-modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.checkout-modal-note {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0 !important;
}

.checkout-modal-note a {
    color: var(--primary);
}

/* ── Trust Row ─────────────────────────────────── */
.checkout-trust-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 40px 0 20px;
}

.checkout-trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Pricing Note ──────────────────────────────── */
.checkout-pricing-note {
    text-align: center;
    margin-top: 12px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.checkout-pricing-note a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ── FAQ Section ───────────────────────────────── */
.checkout-faq-section {
    padding: 80px 0;
}

/* Checkout FAQ Accordion */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; transition: border-color 0.25s; }
.faq-item.active { border-color: var(--border-hover); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-size: 1rem; font-weight: 600; color: var(--white); text-align: left; transition: all 0.2s; }
.faq-question:hover { color: var(--primary); }
.faq-chevron { flex-shrink: 0; transition: transform 0.3s; color: var(--text-muted); }
.faq-item.active .faq-chevron { transform: rotate(180deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; }

/* ── Animate on Scroll ─────────────────────────── */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Index Page: Inline Pricing CTA overrides ──── */
/* When Stripe is wired up on index.html, make pricing buttons work */
.pricing-card .btn[data-checkout-product] {
    cursor: pointer;
}

/* ── Responsive ────────────────────────────────── */
@media (max-width: 900px) {
    .checkout-pricing-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* Move popular card to top on tablet */
    .checkout-pricing-card-popular {
        order: -1;
        grid-column: 1 / -1;
        max-width: 480px;
        margin: 0 auto;
        width: 100%;
    }
}

@media (max-width: 600px) {
    .checkout-pricing-grid {
        grid-template-columns: 1fr;
    }

    .checkout-pricing-card-popular {
        grid-column: auto;
        max-width: 100%;
    }

    .checkout-pricing-card {
        padding: 28px 24px 24px;
    }

    .checkout-modal {
        padding: 40px 24px;
    }

    .checkout-trust-row {
        gap: 20px;
    }

    .checkout-trust-item {
        font-size: 0.82rem;
    }

    .billing-toggle-btn {
        padding: 8px 16px;
        font-size: 0.82rem;
    }
}