/* ═══════════════════════════════════════════════════════════════
   KESKA SOFTWARE - CHECKOUT & CUSTOMIZE PLAN SYSTEM
   Full Light & Dark Mode Compatibility, High-Conversion UX
   ═══════════════════════════════════════════════════════════════ */

:root {
    --co-bg-grad: radial-gradient(circle at top center, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.05) 50%, transparent 75%);
    --co-card-bg: rgba(15, 23, 42, 0.88);
    --co-card-border: rgba(99, 102, 241, 0.25);
    --co-card-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    --co-hero-bg: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(168, 85, 247, 0.06));
    --co-hero-border: rgba(99, 102, 241, 0.3);
    --co-text-main: #FFFFFF;
    --co-text-muted: #94A3B8;
    --co-text-subtle: #64748B;
    --co-input-bg: rgba(8, 12, 22, 0.85);
    --co-input-border: rgba(99, 102, 241, 0.25);
    --co-input-text: #FFFFFF;
    --co-addon-bg: rgba(17, 24, 39, 0.7);
    --co-addon-border: rgba(255, 255, 255, 0.08);
    --co-addon-selected-bg: rgba(99, 102, 241, 0.15);
    --co-addon-selected-border: #6366F1;
    --co-step-idle: rgba(255, 255, 255, 0.45);
    --co-step-num-bg: rgba(255, 255, 255, 0.08);
    --co-badge-bg: rgba(99, 102, 241, 0.15);
    --co-badge-text: #818CF8;
    --co-badge-border: rgba(99, 102, 241, 0.3);
}

[data-theme="light"],
html:not([data-theme="dark"]) body.keska-body {
    --co-bg-grad: radial-gradient(circle at top center, rgba(99, 102, 241, 0.12) 0%, #F8FAFC 55%, #F1F5F9 100%);
    --co-card-bg: #FFFFFF;
    --co-card-border: rgba(15, 23, 42, 0.09);
    --co-card-shadow: 0 16px 40px -10px rgba(15, 23, 42, 0.07);
    --co-hero-bg: #F8FAFC;
    --co-hero-border: rgba(99, 102, 241, 0.18);
    --co-text-main: #0F172A;
    --co-text-muted: #475569;
    --co-text-subtle: #64748B;
    --co-input-bg: #F8FAFC;
    --co-input-border: #CBD5E1;
    --co-input-text: #0F172A;
    --co-addon-bg: #F8FAFC;
    --co-addon-border: #E2E8F0;
    --co-addon-selected-bg: #EEF2FF;
    --co-addon-selected-border: #6366F1;
    --co-step-idle: #94A3B8;
    --co-step-num-bg: #F1F5F9;
    --co-badge-bg: #EEF2FF;
    --co-badge-text: #4F46E5;
    --co-badge-border: rgba(99, 102, 241, 0.25);
}

[data-theme="light"] .checkout-card,
html:not([data-theme="dark"]) .checkout-card {
    background: #FFFFFF !important;
    border: 1px solid rgba(15, 23, 42, 0.08) !important;
    color: #0F172A !important;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05) !important;
}

[data-theme="light"] .plan-summary-hero,
html:not([data-theme="dark"]) .plan-summary-hero {
    background: #F8FAFC !important;
    border: 1px solid #E2E8F0 !important;
}

[data-theme="light"] .plan-hero-title,
html:not([data-theme="dark"]) .plan-hero-title {
    color: #0F172A !important;
}

[data-theme="light"] .plan-hero-desc,
html:not([data-theme="dark"]) .plan-hero-desc {
    color: #475569 !important;
}

[data-theme="light"] .badge-plan-tier,
html:not([data-theme="dark"]) .badge-plan-tier {
    background: #EEF2FF !important;
    color: #4F46E5 !important;
    border-color: rgba(99, 102, 241, 0.25) !important;
}

[data-theme="light"] .addon-select-card,
html:not([data-theme="dark"]) .addon-select-card {
    background: #FFFFFF !important;
    border: 1.5px solid #E2E8F0 !important;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03) !important;
}

[data-theme="light"] .addon-select-card:hover,
html:not([data-theme="dark"]) .addon-select-card:hover {
    border-color: rgba(99, 102, 241, 0.4) !important;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.08) !important;
}

[data-theme="light"] .addon-select-card.selected,
html:not([data-theme="dark"]) .addon-select-card.selected {
    background: #F5F7FF !important;
    border-color: #6366F1 !important;
    box-shadow: 0 0 0 1px #6366F1, 0 8px 24px rgba(99, 102, 241, 0.12) !important;
}

[data-theme="light"] .addon-select-card .addon-title,
html:not([data-theme="dark"]) .addon-select-card .addon-title {
    color: #0F172A !important;
}

[data-theme="light"] .addon-select-card.selected .addon-title,
html:not([data-theme="dark"]) .addon-select-card.selected .addon-title {
    color: #4F46E5 !important;
}

[data-theme="light"] .addon-select-card .addon-desc,
html:not([data-theme="dark"]) .addon-select-card .addon-desc {
    color: #64748B !important;
}

[data-theme="light"] .addon-price-badge,
html:not([data-theme="dark"]) .addon-price-badge {
    background: #EEF2FF !important;
    color: #4F46E5 !important;
    border-color: rgba(99, 102, 241, 0.2) !important;
}

[data-theme="light"] .checkout-main-title,
html:not([data-theme="dark"]) .checkout-main-title {
    color: #0F172A !important;
}

[data-theme="light"] .checkout-section-title,
html:not([data-theme="dark"]) .checkout-section-title {
    color: #4F46E5 !important;
}

[data-theme="light"] .checkout-label,
html:not([data-theme="dark"]) .checkout-label {
    color: #334155 !important;
}

[data-theme="light"] .checkout-input,
html:not([data-theme="dark"]) .checkout-input {
    background: #F8FAFC !important;
    border-color: #CBD5E1 !important;
    color: #0F172A !important;
}

[data-theme="light"] .checkout-input:focus,
html:not([data-theme="dark"]) .checkout-input:focus {
    background: #FFFFFF !important;
    border-color: #6366F1 !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15) !important;
}

[data-theme="light"] .checkout-summary-title,
html:not([data-theme="dark"]) .checkout-summary-title {
    color: #0F172A !important;
}

[data-theme="light"] .checkout-summary-label,
html:not([data-theme="dark"]) .checkout-summary-label {
    color: #64748B !important;
}

[data-theme="light"] .checkout-summary-val,
html:not([data-theme="dark"]) .checkout-summary-val {
    color: #0F172A !important;
}

[data-theme="light"] .checkout-summary-price,
html:not([data-theme="dark"]) .checkout-summary-price {
    color: #4F46E5 !important;
}

[data-theme="light"] .checkout-summary-total-label,
html:not([data-theme="dark"]) .checkout-summary-total-label {
    color: #0F172A !important;
}

[data-theme="light"] .checkout-coupon-box,
html:not([data-theme="dark"]) .checkout-coupon-box {
    background: #F8FAFC !important;
    border-color: #E2E8F0 !important;
}

.checkout-wrapper {
    background: var(--co-bg-grad);
    padding: 40px 0 100px;
    min-height: 85vh;
}

/* ── 3-STEP PROGRESS BAR (STEPPER) ── */
.customize-steps-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.customize-step-item {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--co-step-idle);
    font-size: 0.92rem;
    font-weight: 600;
    transition: all 0.2s ease;
    padding: 6px 14px;
    border-radius: 999px;
    background: transparent;
}

.customize-step-item.active {
    color: #4F46E5;
    background: var(--co-badge-bg);
    border: 1px solid var(--co-badge-border);
}

[data-theme="dark"] .customize-step-item.active {
    color: #818CF8;
}

.customize-step-item.completed {
    color: #10B981;
}

.customize-step-num {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    background: var(--co-step-num-bg);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: inherit;
    flex-shrink: 0;
}

[data-theme="dark"] .customize-step-num {
    border-color: rgba(255, 255, 255, 0.15);
}

.customize-step-item.active .customize-step-num {
    background: #6366F1;
    border-color: #818CF8;
    color: #FFFFFF;
    box-shadow: 0 0 14px rgba(99, 102, 241, 0.45);
}

.customize-step-item.completed .customize-step-num {
    background: rgba(16, 185, 129, 0.15);
    border-color: #10B981;
    color: #10B981;
}

.customize-step-arrow {
    color: var(--co-step-idle);
    opacity: 0.5;
    font-size: 0.8rem;
}

/* ── CARDS & LAYOUT ── */
.checkout-card {
    background: var(--co-card-bg);
    border: 1px solid var(--co-card-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--co-card-shadow);
    color: var(--co-text-main);
    transition: all 0.3s ease;
}

.checkout-main-title {
    color: var(--co-text-main);
    font-weight: 800;
    font-size: 1.6rem;
    letter-spacing: -0.02em;
}

.checkout-sticky-col {
    position: sticky;
    top: 90px;
    align-self: flex-start;
}

/* ── HERO PLAN BANNER ── */
.plan-summary-hero {
    background: var(--co-hero-bg);
    border: 1px solid var(--co-hero-border);
    border-radius: 14px;
    padding: 0.85rem 1.15rem;
}

.plan-hero-icon-box {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(99, 102, 241, 0.15));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.plan-hero-title {
    color: var(--co-text-main);
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.plan-hero-desc {
    color: var(--co-text-muted);
    font-size: 0.76rem;
    line-height: 1.35;
}

.period-toggle-group button {
    font-size: 0.76rem;
    padding: 3px 10px !important;
}

.badge-plan-tier {
    background: var(--co-badge-bg);
    color: var(--co-badge-text);
    border: 1px solid var(--co-badge-border);
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    letter-spacing: 0.02em;
}

.badge-period-status {
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    display: inline-block;
}

/* ── ADDON MODULES LIST (CLEAN SINGLE COLUMN) ── */
.addons-list-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 480px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 6px;
    padding-bottom: 4px;
    scrollbar-width: thin;
    scrollbar-color: rgba(99, 102, 241, 0.3) transparent;
}

.addons-list-container::-webkit-scrollbar {
    width: 5px;
}

.addons-list-container::-webkit-scrollbar-track {
    background: transparent;
}

.addons-list-container::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.25);
    border-radius: 10px;
}

[data-theme="light"] .addons-list-container::-webkit-scrollbar-thumb,
html:not([data-theme="dark"]) .addons-list-container::-webkit-scrollbar-thumb {
    background: #CBD5E1;
}

.addon-select-card {
    background: var(--co-addon-bg);
    border: 1.5px solid var(--co-addon-border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    position: relative;
    user-select: none;
}

.addon-select-card:hover {
    border-color: rgba(99, 102, 241, 0.45);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .addon-select-card:hover {
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.addon-select-card.selected {
    background: var(--co-addon-selected-bg);
    border-color: #6366F1;
    box-shadow: 0 0 0 1px #6366F1, 0 4px 14px rgba(99, 102, 241, 0.12);
}

.addon-select-card .cust-addon-cb {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    border-radius: 4px;
    accent-color: #6366F1;
}

.addon-icon-circle {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.12);
    color: #6366F1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

[data-theme="light"] .addon-icon-circle,
html:not([data-theme="dark"]) .addon-icon-circle {
    background: #EEF2FF;
    color: #4F46E5;
}

.addon-select-card .addon-title {
    color: var(--co-text-main);
    font-weight: 700;
    font-size: 0.88rem;
    line-height: 1.25;
}

.addon-select-card.selected .addon-title {
    color: #4F46E5;
}

[data-theme="dark"] .addon-select-card.selected .addon-title {
    color: #818CF8;
}

.addon-select-card .addon-desc {
    color: var(--co-text-muted);
    font-size: 0.76rem;
    line-height: 1.35;
    margin-top: 2px;
}

.addon-price-badge {
    background: var(--co-badge-bg);
    color: var(--co-badge-text);
    border: 1px solid var(--co-badge-border);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: inherit;
    white-space: nowrap;
}

/* ── LANGUAGE & BRANCH CHIP BUTTONS ── */
.btn-check + .btn-outline-primary {
    border-color: rgba(99, 102, 241, 0.35) !important;
    color: var(--co-text-main) !important;
    background: transparent !important;
    transition: all 0.15s ease-in-out !important;
}

[data-theme="light"] .btn-check + .btn-outline-primary,
html:not([data-theme="dark"]) .btn-check + .btn-outline-primary {
    color: #475569 !important;
    border-color: #CBD5E1 !important;
    background: #FFFFFF !important;
}

.btn-check:hover + .btn-outline-primary {
    border-color: #6366F1 !important;
    color: #6366F1 !important;
}

.btn-check:checked + .btn-outline-primary {
    background: #4F46E5 !important;
    background-color: #4F46E5 !important;
    border-color: #4F46E5 !important;
    color: #FFFFFF !important;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.4) !important;
    font-weight: 700 !important;
}

[data-theme="light"] .btn-check:checked + .btn-outline-primary,
html:not([data-theme="dark"]) .btn-check:checked + .btn-outline-primary {
    background: #4F46E5 !important;
    background-color: #4F46E5 !important;
    border-color: #4F46E5 !important;
    color: #FFFFFF !important;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.35) !important;
    font-weight: 700 !important;
}

/* ── FORM CONTROLS & INPUTS ── */
.checkout-input {
    background: var(--co-input-bg) !important;
    border: 1.5px solid var(--co-input-border) !important;
    color: var(--co-input-text) !important;
    border-radius: 12px !important;
    padding: 12px 16px !important;
    font-size: 0.95rem !important;
    transition: all 0.2s ease !important;
}

.checkout-input::placeholder {
    color: var(--co-text-subtle) !important;
}

.checkout-input:focus {
    border-color: #6366F1 !important;
    background: var(--co-card-bg) !important;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15) !important;
    outline: none !important;
}

.checkout-label {
    font-weight: 600;
    color: var(--co-text-main);
    font-size: 0.88rem;
    margin-bottom: 6px;
    display: block;
}

.checkout-section-title {
    font-size: 0.88rem;
    font-weight: 800;
    color: #4F46E5;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
}

[data-theme="dark"] .checkout-section-title {
    color: #818CF8;
}

/* ── SUMMARY CARD & CTA BUTTON ── */
.checkout-summary-card {
    border-radius: 24px;
}

.checkout-summary-title {
    color: var(--co-text-main);
    font-weight: 800;
    font-size: 1.25rem;
}

.checkout-summary-label {
    color: var(--co-text-muted);
    font-size: 0.92rem;
}

.checkout-summary-val {
    color: var(--co-text-main);
    font-weight: 700;
    font-size: 0.95rem;
}

.checkout-divider {
    border-color: rgba(99, 102, 241, 0.2);
    opacity: 0.4;
}

[data-theme="light"] .checkout-divider {
    border-color: #E2E8F0;
    opacity: 1;
}

.checkout-summary-total-label {
    color: var(--co-text-main);
    font-weight: 800;
    font-size: 1.05rem;
}

.checkout-summary-price {
    color: #4F46E5;
    font-weight: 900;
}

[data-theme="dark"] .checkout-summary-price {
    color: #818CF8;
}

.btn-continue-checkout {
    background: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #9333EA 100%);
    color: #FFFFFF !important;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    padding: 1.1rem 2rem;
    font-size: 1.05rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
    width: 100%;
}

.btn-continue-checkout:hover {
    color: #FFFFFF !important;
    transform: translateY(-2px);
    box-shadow: 0 14px 35px rgba(79, 70, 229, 0.5);
}

/* ── PURCHASED ITEMS SUMMARY BOX (READ-ONLY) ── */
.purchased-items-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.22);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

[data-theme="light"] .purchased-items-box {
    background: #F8FAFC;
    border-color: #E2E8F0;
}

[data-theme="light"] .purchased-items-box .text-white {
    color: #0F172A !important;
}

[data-theme="light"] .purchased-items-box .text-white-50 {
    color: #64748B !important;
}

.purchased-item-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

/* ── HYPER-REALISTIC 3D FLIPPING BANK CARD ── */
.card-3d-container {
    perspective: 1200px;
    width: 100%;
    max-width: 400px;
    height: 245px;
    margin: 0 auto;
    cursor: pointer;
    user-select: none;
    filter: drop-shadow(0 25px 35px rgba(0, 0, 0, 0.5));
}

.card-3d-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: left;
    transition: transform 0.75s cubic-bezier(0.19, 1, 0.22, 1);
    transform-style: preserve-3d;
}

.card-3d-inner.is-flipped {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 18px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-sizing: border-box;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

/* ── FRONT FACE REALISTIC METALLIC DESIGN ── */
.card-front {
    background: 
        radial-gradient(ellipse at 85% 15%, rgba(99, 102, 241, 0.45) 0%, transparent 50%),
        radial-gradient(ellipse at 15% 85%, rgba(168, 85, 247, 0.35) 0%, transparent 50%),
        linear-gradient(135deg, #090e1a 0%, #111a33 35%, #182245 70%, #1e1b4b 100%);
    padding: 24px 26px;
    color: #ffffff;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.25), inset 0 -1px 2px rgba(0, 0, 0, 0.5);
}

.card-front-sheen {
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.08) 45%, rgba(255, 255, 255, 0.18) 50%, rgba(255, 255, 255, 0.05) 55%, transparent 60%);
    pointer-events: none;
    z-index: 1;
}

/* ── REALISTIC BRUSHED GOLD EMV CHIP ── */
.card-chip-realistic {
    position: relative;
    width: 46px;
    height: 35px;
    background: linear-gradient(135deg, #d4af37 0%, #fff1a8 30%, #ca8a04 60%, #996515 100%);
    border-radius: 6px;
    box-shadow: 
        inset 0 1px 2px rgba(255, 255, 255, 0.6),
        inset 0 -1px 2px rgba(0, 0, 0, 0.4),
        0 2px 6px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(133, 77, 14, 0.5);
    overflow: hidden;
}

.chip-line {
    position: absolute;
    background: rgba(113, 63, 18, 0.45);
}

.line-h-1 { top: 11px; left: 0; right: 0; height: 1px; }
.line-h-2 { bottom: 11px; left: 0; right: 0; height: 1px; }
.line-v-1 { top: 0; bottom: 0; left: 50%; width: 1px; }

.chip-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 14px;
    height: 14px;
    border-radius: 3px;
    border: 1px solid rgba(113, 63, 18, 0.45);
    background: rgba(255, 255, 255, 0.15);
}

/* ── CONTACTLESS ICON ── */
.contactless-icon {
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
}

/* ── CARD BRAND LOGOS ── */
.card-brand-display {
    text-align: right;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    min-height: 32px;
}

.brand-keskapay {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1;
}

.brand-text-keska {
    font-size: 1.15rem;
    font-weight: 900;
    letter-spacing: 1.5px;
    color: #FFFFFF;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.6);
}

.brand-text-pay {
    color: #818CF8;
    font-weight: 400;
}

.brand-tier {
    font-size: 0.55rem;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 2px;
    font-weight: 700;
}

/* Dynamic Visa / Mastercard / Troy SVGs */
.brand-logo-svg {
    height: 28px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

/* ── EMBOSSED CARD NUMBER ── */
.card-number-embossed {
    font-family: 'Courier New', Courier, monospace, system-ui;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 3.5px;
    color: #F8FAFC;
    text-shadow: 
        0 1px 1px rgba(255, 255, 255, 0.5),
        0 -1px 2px rgba(0, 0, 0, 0.8),
        0 2px 5px rgba(0, 0, 0, 0.6);
    position: relative;
    z-index: 2;
    white-space: nowrap;
}

/* ── CARD EMBOSSED LABELS & VALUES ── */
.card-embossed-label {
    font-size: 0.55rem;
    letter-spacing: 1.2px;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 2px;
    font-weight: 600;
}

.card-embossed-value {
    font-family: 'Courier New', Courier, monospace, system-ui;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: #FFFFFF;
    text-shadow: 
        0 1px 1px rgba(255, 255, 255, 0.4),
        0 -1px 2px rgba(0, 0, 0, 0.8);
}

.card-valid-stack {
    display: flex;
    flex-direction: column;
    font-size: 0.45rem;
    line-height: 1.1;
    letter-spacing: 0.8px;
    color: rgba(255, 255, 255, 0.55);
    font-weight: 700;
    text-align: right;
}

.card-hologram-seal {
    width: 32px;
    height: 24px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.05) 100%);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    backdrop-filter: blur(4px);
}

/* ── BACK FACE REALISTIC DESIGN ── */
.card-back {
    background: linear-gradient(135deg, #0a0f1d 0%, #151a2e 50%, #0d1222 100%);
    transform: rotateY(180deg);
    padding: 22px 0 16px;
    color: #ffffff;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.2), inset 0 -1px 2px rgba(0, 0, 0, 0.6);
}

.card-magnetic-bar-realistic {
    width: 100%;
    height: 46px;
    background: linear-gradient(180deg, #050811 0%, #121624 50%, #03050a 100%);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.9), 0 1px 2px rgba(255, 255, 255, 0.08);
    border-top: 1px solid rgba(0, 0, 0, 0.8);
    border-bottom: 1px solid rgba(0, 0, 0, 0.8);
}

.card-signature-panel-realistic {
    width: 100%;
    height: 38px;
    background: repeating-linear-gradient(
        45deg,
        #f1f5f9,
        #f1f5f9 6px,
        #e2e8f0 6px,
        #e2e8f0 12px
    );
    border-radius: 4px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.card-signature-panel-realistic .sig-lines {
    color: #475569;
    font-size: 0.7rem;
    font-style: italic;
    opacity: 0.7;
}

.card-signature-panel-realistic .cvc-box {
    background: #FFFFFF;
    color: #0F172A;
    padding: 3px 10px;
    border-radius: 3px;
    font-size: 0.95rem;
    letter-spacing: 2px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
    border: 1px solid #CBD5E1;
}

.hologram-badge-mini {
    background: linear-gradient(135deg, #a855f7, #6366f1, #3b82f6);
    color: #FFFFFF;
    font-size: 0.55rem;
    font-weight: 800;
    letter-spacing: 1px;
    padding: 1px 6px;
    border-radius: 3px;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
}

.checkout-flip-badge {
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #A5B4FC;
    font-weight: 500;
}

[data-theme="light"] .checkout-flip-badge {
    background: #EEF2FF;
    color: #4F46E5;
    border-color: rgba(99, 102, 241, 0.25);
}

@media (max-width: 768px) {
    .checkout-wrapper {
        padding: 20px 0 60px;
    }
    .customize-steps-bar {
        gap: 0.5rem;
    }
    .customize-step-item {
        font-size: 0.8rem;
        padding: 4px 10px;
    }
    .plan-summary-hero {
        padding: 1.25rem;
    }
    .plan-hero-title {
        font-size: 1.35rem;
    }
    .card-3d-container {
        max-width: 340px;
        height: 215px;
    }
    .card-number-embossed {
        font-size: 1.15rem;
        letter-spacing: 2px;
    }
}