:root {
    --color-primary: #fecf0c;
    --color-primary-rgb: 254, 207, 12;
    --color-black: #000000;
    --color-dark: #0f0f11;
    --color-gray-dark: #1e1e24;
    --color-gray: #7d7d8c;
    --color-gray-light: #f5f5f7;
    --color-white: #ffffff;
    --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, .04);
    --shadow-md: 0 12px 28px rgba(0, 0, 0, .08);
    --shadow-lg: 0 24px 48px rgba(0, 0, 0, .12);
    --transition: cubic-bezier(0.16, 1, 0.3, 1);
}

.checkout-page {
    width: min(1240px, calc(100% - 32px));
    margin: 0 auto;
    padding: 30px 0 76px;
    color: var(--color-dark);
    font-family: var(--font-body);
}

.checkout-shell {
    display: block;
}

.checkout-main {
    width: min(880px, 100%);
    margin: 0 auto;
}

.checkout-header,
.checkout-result {
    position: relative;
    border-radius: 20px;
    background: radial-gradient(circle at right, #1a1a1e, var(--color-black));
    color: var(--color-white);
    padding: clamp(28px, 5vw, 58px);
    margin-bottom: 28px;
    border-top: 4px solid var(--color-primary);
    overflow: hidden;
}

.checkout-header::before,
.checkout-result::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(254, 207, 12, .06), transparent 50%);
    pointer-events: none;
}

.checkout-header {
    padding: 32px 36px;
}

.checkout-header > *,
.checkout-result > * {
    position: relative;
    z-index: 1;
}

.checkout-header span,
.checkout-result span {
    display: inline-flex;
    width: fit-content;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(254, 207, 12, .12);
    color: var(--color-primary);
    font-weight: 900;
    font-size: 13px;
    letter-spacing: .03em;
    text-transform: uppercase;
    border: 1px solid rgba(254, 207, 12, .15);
}

.checkout-header h1,
.checkout-result h1 {
    max-width: 740px;
    margin: 16px 0 10px;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -.02em;
    font-family: var(--font-heading);
}

.checkout-header p,
.checkout-result p {
    max-width: 680px;
    margin: 0;
    color: rgba(255, 255, 255, .7);
    line-height: 1.7;
    font-size: 16px;
}

.checkout-form {
    display: grid;
    gap: 20px;
}

.checkout-card,
.checkout-summary {
    border: 1px solid rgba(0, 0, 0, .08);
    border-radius: 16px;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.checkout-card {
    padding: 0;
}

.checkout-card h2,
.checkout-summary h2 {
    margin: 0;
    font-size: 17px;
    font-weight: 900;
    font-family: var(--font-heading);
    letter-spacing: 0;
}

.checkout-card > h2 {
    background: var(--color-primary);
    color: var(--color-black);
    padding: 16px 24px;
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    letter-spacing: .01em;
}

.checkout-card > .checkout-grid,
.checkout-card > .checkout-payments,
.checkout-card > .checkout-muted {
    padding: 20px 24px 24px;
}

.checkout-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.checkout-grid-full {
    grid-column: 1 / -1;
}

.checkout-grid label,
.checkout-card label {
    display: grid;
    gap: 8px;
}

.checkout-grid span,
.checkout-card label > span {
    font-weight: 700;
    font-size: 13px;
    color: var(--color-dark);
    letter-spacing: 0;
}

.checkout-grid input,
.checkout-grid select {
    width: 100%;
    min-height: 48px;
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 12px;
    box-sizing: border-box;
    font: inherit;
    font-size: 15px;
    padding: 12px 14px;
    outline: none;
    background: var(--color-gray-light);
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease, transform .15s var(--transition);
}

.checkout-grid input::placeholder {
    color: var(--color-gray);
}

.checkout-grid input:focus,
.checkout-grid select:focus {
    border-color: rgba(254, 207, 12, .7);
    box-shadow: 0 0 0 4px rgba(254, 207, 12, .12);
    background: var(--color-white);
    transform: translateY(-1px);
}

.checkout-input-error {
    border-color: #dc2626 !important;
    background: #fef2f2 !important;
}

.checkout-input-error:focus {
    box-shadow: 0 0 0 4px rgba(220, 38, 38, .12) !important;
    border-color: #dc2626 !important;
}

.checkout-field-error {
    margin: 4px 0 0;
    font-size: 13px;
    font-weight: 600;
    color: #dc2626;
    line-height: 1.3;
}

.checkout-payments {
    display: grid;
    gap: 12px;
}

.checkout-payment {
    display: grid;
    grid-template-columns: 22px 1fr;
    align-items: center;
    gap: 14px;
    border: 1px solid rgba(0, 0, 0, .08);
    border-radius: 12px;
    cursor: pointer;
    padding: 18px;
    transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.checkout-payment:hover {
    border-color: rgba(0, 0, 0, .15);
    box-shadow: var(--shadow-sm);
    background: var(--color-gray-light);
}

.checkout-payment:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(254, 207, 12, .04);
    box-shadow: 0 0 0 3px rgba(254, 207, 12, .12);
}

.checkout-payment strong,
.checkout-payment small {
    display: block;
}

.checkout-payment strong {
    font-weight: 800;
    font-size: 15px;
    color: var(--color-dark);
}

.checkout-payment small {
    margin-top: 4px;
    color: var(--color-gray);
    font-weight: 500;
    font-size: 13px;
}

.checkout-muted {
    color: var(--color-gray);
    font-size: 14px;
}

.checkout-legal {
    display: grid;
    gap: 14px;
    padding: 20px 24px;
    border: 1px solid rgba(0, 0, 0, .08);
    border-radius: 16px;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.checkout-coupon {
    display: grid;
    gap: 10px;
    padding: 18px 22px 22px;
}

.checkout-account-options {
    display: grid;
    gap: 12px;
    padding: 18px 22px 0;
}

.checkout-account-options p {
    margin: 0;
    color: var(--color-gray);
    line-height: 1.6;
    font-size: 14px;
}

.checkout-account-options button {
    width: fit-content;
    min-height: 42px;
    border: 2px solid var(--color-black);
    border-radius: 12px;
    background: transparent;
    color: var(--color-black);
    cursor: pointer;
    font: inherit;
    font-weight: 900;
    font-size: 13px;
    padding: 0 20px;
    transition: all .25s var(--transition);
}

.checkout-account-options button:hover {
    background: var(--color-black);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .1);
}

.checkout-login-modal[hidden] {
    display: none;
}

.checkout-login-modal {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: grid;
    place-items: center;
    padding: 20px;
}

.checkout-login-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .5);
    backdrop-filter: blur(4px);
}

.checkout-login-modal__panel {
    position: relative;
    width: min(420px, 100%);
    display: grid;
    gap: 16px;
    border-radius: 16px;
    background: var(--color-white);
    padding: 28px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, .2);
    animation: checkoutModalIn .3s var(--transition);
}

@keyframes checkoutModalIn {
    from {
        opacity: 0;
        transform: scale(.96) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.checkout-login-modal__panel header {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    align-items: flex-start;
}

.checkout-login-modal__panel header span {
    color: var(--color-gray);
    font-weight: 800;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.checkout-login-modal__panel h2 {
    margin: 4px 0 0;
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 900;
}

.checkout-login-modal__panel header button {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    background: var(--color-gray-light);
    cursor: pointer;
    font-size: 22px;
    color: var(--color-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s ease;
}

.checkout-login-modal__panel header button:hover {
    background: var(--color-primary);
    color: var(--color-black);
}

.checkout-login-modal__panel label {
    display: grid;
    gap: 7px;
    font-weight: 800;
    font-size: 14px;
    color: var(--color-dark);
}

.checkout-login-modal__panel input {
    min-height: 46px;
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 12px;
    padding: 10px 14px;
    font: inherit;
    font-size: 15px;
    background: var(--color-gray-light);
    transition: border-color .2s ease, box-shadow .2s ease;
    outline: none;
}

.checkout-login-modal__panel input:focus {
    border-color: rgba(254, 207, 12, .7);
    box-shadow: 0 0 0 4px rgba(254, 207, 12, .12);
    background: var(--color-white);
}

.checkout-login-modal__panel > button[type="submit"] {
    min-height: 48px;
    border: none;
    border-radius: 12px;
    background: var(--color-primary);
    color: var(--color-black);
    cursor: pointer;
    font: inherit;
    font-weight: 900;
    font-size: 15px;
    transition: all .25s var(--transition);
}

.checkout-login-modal__panel > button[type="submit"]:hover {
    background: var(--color-black);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(254, 207, 12, .2);
}

#checkoutLoginStatus {
    min-height: 18px;
    margin: 0;
    color: var(--color-gray);
    font-size: 13px;
    font-weight: 600;
    text-align: center;
}

#checkoutLoginStatus.success {
    color: #059669;
}

#checkoutLoginStatus.error {
    color: #dc2626;
}

.checkout-coupon > div {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 10px;
}

.checkout-coupon input {
    min-width: 0;
    min-height: 46px;
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 12px;
    box-sizing: border-box;
    font: inherit;
    font-weight: 800;
    font-size: 14px;
    padding: 10px 14px;
    text-transform: uppercase;
    background: var(--color-gray-light);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.checkout-coupon input:focus {
    border-color: rgba(254, 207, 12, .7);
    box-shadow: 0 0 0 4px rgba(254, 207, 12, .12);
    background: var(--color-white);
}

.checkout-coupon button {
    min-height: 46px;
    border: none;
    border-radius: 12px;
    background: var(--color-black);
    color: var(--color-white);
    cursor: pointer;
    font: inherit;
    font-weight: 900;
    font-size: 13px;
    padding: 0 18px;
    transition: all .25s var(--transition);
}

.checkout-coupon button:hover {
    background: var(--color-primary);
    color: var(--color-black);
    transform: translateY(-2px);
}

#checkoutCouponRemove {
    width: fit-content;
    min-height: auto;
    background: transparent;
    color: var(--color-gray);
    padding: 0;
    font-weight: 700;
    font-size: 13px;
}

#checkoutCouponRemove:hover {
    color: #dc2626;
    background: transparent;
    transform: none;
    box-shadow: none;
}

#checkoutCouponStatus {
    min-height: 18px;
    margin: 0;
    color: var(--color-gray);
    font-size: 13px;
    font-weight: 700;
}

#checkoutCouponStatus.success {
    color: #059669;
}

#checkoutCouponStatus.error {
    color: #dc2626;
}

.checkout-check {
    display: grid;
    grid-template-columns: 20px 1fr;
    gap: 10px;
    align-items: start;
}

.checkout-check input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.checkout-check span {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-gray);
}

.checkout-check a {
    color: var(--color-dark);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color .2s ease;
}

.checkout-check a:hover {
    color: var(--color-primary);
}

.checkout-submit-row {
    display: grid;
    gap: 12px;
}

.checkout-submit,
.checkout-btn {
    min-height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-primary);
    border-radius: 14px;
    cursor: pointer;
    font: inherit;
    font-weight: 900;
    font-size: 16px;
    padding: 0 32px;
    text-decoration: none;
    transition: all .25s var(--transition);
}

.checkout-submit,
.checkout-btn--primary {
    background: var(--color-primary);
    color: var(--color-black);
    box-shadow: 0 8px 24px rgba(254, 207, 12, .2);
}

.checkout-submit:hover:not(:disabled) {
    background: var(--color-black);
    color: var(--color-primary);
    border-color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(254, 207, 12, .28);
}

.checkout-submit:active:not(:disabled) {
    transform: translateY(0);
}

.checkout-submit:disabled {
    cursor: wait;
    opacity: .6;
}

.checkout-btn--secondary {
    background: transparent;
    color: var(--color-dark);
    border: 2px solid rgba(0, 0, 0, .1);
}

.checkout-btn--secondary:hover {
    border-color: var(--color-black);
    background: var(--color-gray-light);
    transform: translateY(-2px);
}

.checkout-status {
    min-height: 20px;
    margin: 0;
    font-size: 14px;
    text-align: center;
    font-weight: 600;
}

.checkout-status.error {
    color: #dc2626;
}

.checkout-status.success {
    color: #059669;
}

.checkout-summary {
    padding: 0;
}

.checkout-summary h2 {
    background: var(--color-primary);
    color: var(--color-black);
    padding: 16px 24px;
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    text-align: center;
    letter-spacing: .01em;
}

.checkout-items {
    display: grid;
    gap: 12px;
    padding: 20px 24px 4px;
}

.checkout-item,
.checkout-total {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, .06);
}

.checkout-item span {
    font-size: 14px;
    color: var(--color-dark);
}

.checkout-item strong {
    font-size: 14px;
    font-weight: 800;
    color: var(--color-dark);
    white-space: nowrap;
}

.checkout-total {
    margin: 0 24px;
    padding: 14px 0 0;
    border: 0;
}

.checkout-total span:first-child {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    font-size: 14px;
    color: var(--color-gray);
}

.checkout-total:not(.checkout-total--grand) span:first-child::after {
    content: "";
    flex: 1;
    min-width: 44px;
    border-bottom: 1px dashed rgba(0, 0, 0, .12);
}

.checkout-total--line {
    margin-top: 0;
    padding-top: 12px;
}

.checkout-total--line strong {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-dark);
}

.checkout-total--grand {
    margin-top: 8px;
    padding-top: 16px;
    border-top: 2px solid var(--color-primary);
}

.checkout-total--grand span {
    font-weight: 900;
    font-size: 16px;
    color: var(--color-dark);
}

.checkout-total--grand strong {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-dark);
}

.checkout-back {
    display: block;
    margin: 20px 24px 24px;
    color: var(--color-gray);
    font-weight: 700;
    font-size: 14px;
    text-align: center;
    text-decoration: none;
    transition: color .2s ease;
}

.checkout-back:hover {
    color: var(--color-dark);
}

.checkout-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.checkout-result {
    min-height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (max-width: 920px) {
    .checkout-shell {
        grid-template-columns: 1fr;
    }

    .checkout-summary {
        position: static;
    }
}

@media (max-width: 640px) {
    .checkout-page {
        width: calc(100% - 20px);
        padding-top: 16px;
    }

    .checkout-header {
        padding: 24px 20px;
        border-radius: 16px;
    }

    .checkout-header h1 {
        font-size: 1.6rem;
    }

    .checkout-grid {
        grid-template-columns: 1fr;
    }

    .checkout-card > h2 {
        text-align: left;
        font-size: 15px;
        padding: 14px 18px;
    }

    .checkout-payment {
        padding: 14px 16px;
    }

    .checkout-card > .checkout-grid,
    .checkout-card > .checkout-payments {
        padding: 16px 18px 18px;
    }

    .checkout-check span {
        font-size: 13px;
    }
}