/* ===== SWIFT Bingwa — Global Styles ===== */
:root {
    --bg-dark: #0a0e1a;
    --bg-card: rgba(18, 24, 42, 0.85);
    --bg-card-hover: rgba(24, 32, 56, 0.95);
    --glass: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent: #00d4aa;
    --accent-glow: rgba(0, 212, 170, 0.25);
    --accent-2: #7c5cfc;
    --accent-3: #ff6b6b;
    --text: #e8ecf4;
    --text-muted: #8892a4;
    --text-dim: #5a6478;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Animated gradient background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 800px 600px at 20% 20%, rgba(0, 212, 170, 0.08), transparent),
        radial-gradient(ellipse 600px 500px at 80% 80%, rgba(124, 92, 252, 0.06), transparent),
        radial-gradient(ellipse 400px 400px at 50% 50%, rgba(255, 107, 107, 0.04), transparent);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

/* ===== HEADER ===== */
.header {
    padding: 20px 0;
    border-bottom: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 14, 26, 0.8);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 1.6rem;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-accent {
    color: var(--accent);
}

.tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== HERO ===== */
.hero {
    padding: 60px 0 40px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ===== OFFERS SECTION ===== */
.offers-section {
    padding: 20px 0 60px;
}

.category-block {
    margin-bottom: 48px;
}

.category-header {
    margin-bottom: 20px;
}

.category-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.badge-data { background: rgba(0, 212, 170, 0.15); color: var(--accent); }
.badge-multi { background: rgba(124, 92, 252, 0.15); color: var(--accent-2); }
.badge-minutes { background: rgba(255, 165, 0, 0.15); color: #ffa500; }
.badge-sms { background: rgba(255, 107, 107, 0.15); color: var(--accent-3); }

.category-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.category-note {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 2px;
}

/* ===== OFFER CARDS ===== */
.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.offer-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    transition: var(--transition);
    cursor: default;
    overflow: hidden;
}

.offer-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.06), transparent);
    opacity: 0;
    transition: var(--transition);
}

.offer-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 170, 0.2);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 212, 170, 0.1);
}

.offer-card:hover::before {
    opacity: 1;
}

.offer-card.featured {
    border-color: rgba(0, 212, 170, 0.3);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.08), var(--bg-card));
}

.offer-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, var(--accent), #00b894);
    color: #000;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: 20px;
}

.card-minutes::before { background: linear-gradient(135deg, rgba(255, 165, 0, 0.06), transparent) !important; }
.card-minutes:hover { border-color: rgba(255, 165, 0, 0.2); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 165, 0, 0.1); }

.card-sms::before { background: linear-gradient(135deg, rgba(255, 107, 107, 0.06), transparent) !important; }
.card-sms:hover { border-color: rgba(255, 107, 107, 0.2); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 107, 107, 0.1); }

.offer-amount {
    font-size: 2.4rem;
    font-weight: 900;
    letter-spacing: -1px;
    margin-bottom: 4px;
    position: relative;
    z-index: 1;
}

.offer-amount span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 2px;
}

.offer-duration {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.offer-price {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.offer-price strong {
    font-size: 1.4rem;
    color: var(--accent);
    font-weight: 800;
}

.buy-btn {
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 10px 0;
    border: 1px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.buy-btn:hover {
    background: var(--accent);
    color: #000;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-minutes { border-color: #ffa500; color: #ffa500; }
.btn-minutes:hover { background: #ffa500; color: #000; box-shadow: 0 4px 20px rgba(255, 165, 0, 0.3); }

.btn-sms { border-color: var(--accent-3); color: var(--accent-3); }
.btn-sms:hover { background: var(--accent-3); color: #fff; box-shadow: 0 4px 20px rgba(255, 107, 107, 0.3); }

/* ===== MODAL ===== */
.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 100;
    animation: fadeIn 0.25s ease;
}

.modal-backdrop.active { display: block; }

.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: min(440px, 92vw);
    max-height: 90vh;
    overflow-y: auto;
    background: linear-gradient(180deg, #141a2e 0%, #0e1322 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 32px 28px;
    z-index: 101;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
    animation: modalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.modal.active {
    display: block;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes modalIn { from { opacity: 0; transform: translate(-50%, -50%) scale(0.9); } to { opacity: 1; transform: translate(-50%, -50%) scale(1); } }

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text);
}

.modal-header {
    margin-bottom: 24px;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.modal-offer-summary {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
}

/* ===== FORM ===== */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.required { color: var(--accent-3); }

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder { color: var(--text-dim); }

.form-hint {
    display: block;
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-dim);
}

/* Toggle */
.toggle-row {
    margin-bottom: 18px;
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
}

.toggle-label input { display: none; }

.toggle-switch {
    width: 44px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    position: relative;
    transition: var(--transition);
    flex-shrink: 0;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-label input:checked + .toggle-switch {
    background: var(--accent);
}

.toggle-label input:checked + .toggle-switch::after {
    transform: translateX(20px);
    background: #000;
}

/* Purchase summary */
.purchase-summary {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.purchase-summary strong {
    color: var(--text);
}

/* Submit button */
.submit-btn {
    width: 100%;
    padding: 14px 0;
    background: linear-gradient(135deg, var(--accent), #00b894);
    border: none;
    color: #000;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover {
    box-shadow: 0 6px 24px var(--accent-glow);
    transform: translateY(-1px);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-loader {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.hidden { display: none !important; }

/* Overlay-specific hidden — preserves display:flex for centering */
.service-overlay.hidden {
    display: flex !important;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
}

/* Status panel */
.status-panel {
    text-align: center;
    padding: 20px 0;
}

.status-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.status-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.status-msg {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ===== FOOTER ===== */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    font-size: 0.8rem;
    color: var(--text-dim);
}

.footer a {
    color: var(--accent);
    text-decoration: none;
}

.footer a:hover { text-decoration: underline; }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .header-inner { flex-direction: column; text-align: center; }
    .hero { padding: 40px 0 24px; }
    .hero h1 { font-size: 1.8rem; }
    .offers-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .offer-card { padding: 20px 14px; }
    .offer-amount { font-size: 1.8rem; }
    .modal { padding: 24px 20px; }
}

@media (max-width: 380px) {
    .offers-grid { grid-template-columns: 1fr; }
}

/* ===== SERVICE UNAVAILABLE OVERLAY ===== */
.service-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(16px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    margin: 0;
    visibility: visible;
    opacity: 1;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.service-card {
    background: linear-gradient(180deg, #161d34 0%, #0e1322 100%);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    max-width: 420px;
    width: calc(100% - 32px);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.5);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.service-card h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

.service-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
}

.till-box {
    background: rgba(0, 212, 170, 0.08);
    border: 2px solid rgba(0, 212, 170, 0.3);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin: 20px 0;
}

.till-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.till-number {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    color: var(--text);
    letter-spacing: 4px;
    font-variant-numeric: tabular-nums;
}

.service-note {
    font-size: 0.8rem !important;
    color: var(--text-dim) !important;
    margin-bottom: 0 !important;
}

@media (max-width: 600px) {
    .service-card {
        padding: 28px 20px;
    }
    .service-card h2 {
        font-size: 1.1rem;
    }
    .till-number {
        font-size: 1.6rem;
        letter-spacing: 3px;
    }
}