:root {
    --main-bg: #1e1e1e;
    --text-color: #eee;
    --accent: #ffd700;
    --item-bg: rgba(34, 34, 54, 0.88);
    --input-bg: rgba(10, 10, 26, 0.92);

    --gap-desktop: 2rem;
    --navbar-height: 4.75rem;
    --page-horizontal-padding: 1rem;
    --content-max-width: 1000px;
}

html,
body {
    min-height: 100%;
    overflow-y: auto;
}

body {
    margin: 0;
    padding: 0;
    color: var(--text-color);
    font-family: 'Caveat', cursive;
    overflow-x: hidden;
    box-sizing: border-box;

    display: flex;
    flex-direction: column;
    min-height: 100vh;

    background-color: var(--main-bg);
    background-image:
            linear-gradient(
                    rgba(0, 0, 0, 0.30),
                    rgba(0, 0, 0, 0.20)
            ),
            url("/images/cart-bg.png");
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

*, *::before, *::after {
    box-sizing: inherit;
}

.page-wrapper {
    flex: 1 0 auto;
    padding: calc(var(--navbar-height) + 2rem) var(--page-horizontal-padding) 3rem;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
}

.gallery-title-section {
    width: 100%;
    text-align: center;
    padding-top: 1rem;
    padding-bottom: 1.5rem;
}

.gallery-heading {
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 1.9rem;
    color: var(--accent);
    margin-top: 1rem;
    margin-bottom: 0;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.gallery-heading::after {
    content: "";
    display: block;
    width: 75%;
    height: 1px;
    background-color: var(--accent);
    margin: 0.5rem auto 1.5rem;
}

.cart-content-wrapper {
    display: flex;
    gap: var(--gap-desktop);
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.cart-content {
    display: flex;
    flex-direction: row;
    gap: var(--gap-desktop);
    width: 100%;
}

.cart-items-column,
.checkout-form-column {
    flex: 1;
    background: var(--item-bg);
    padding: 1.8rem 1.6rem;
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.08);
    max-height: 75vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
    opacity: 0.85;
}

.cart-items-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.cart-item-row {
    background: var(--input-bg);
    display: flex;
    align-items: center;
    padding: 0.6rem 0.7rem;
    border-radius: 8px;
    gap: 0.9rem;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.10);
}

.item-thumbnail {
    width: 64px;
    height: 64px;
    object-fit: cover;
    border-radius: 6px;
}

.item-info {
    flex-grow: 1;
    min-width: 0;
}

.item-title {
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.item-size-line {
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.8rem;
    opacity: 0.9;
    margin-bottom: 0.1rem;
}

.item-price {
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.9rem;
    color: var(--accent);
}

.remove-icon-btn {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 1.4rem;
    cursor: pointer;
    transition: transform 0.2s ease, color 0.2s ease;
}

.remove-icon-btn:hover {
    transform: scale(1.15);
    color: #ff5f5f;
}

.empty-cart-msg {
    text-align: center;
    font-style: italic;
    color: #aaa;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.checkout-form {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 0.5rem;
}

.checkout-form h4 {
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    color: var(--accent);
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.checkout-form .form-group {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

.checkout-form label {
    margin-bottom: 0.3rem;
    font-weight: 500;
    color: #f5f5f5;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.9rem;
}

.checkout-form input,
.country-select,
.promo-input {
    padding: 0.5rem 0.6rem;
    background: var(--input-bg);
    border: 1px solid rgba(255, 255, 255, 0.13);
    color: var(--text-color);
    border-radius: 4px;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.95rem;
}

.checkout-form input::placeholder,
.promo-input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.checkout-form input:focus,
.country-select:focus,
.promo-input:focus {
    background-color: rgba(10, 10, 26, 0.96);
    color: #fff;
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 0.16rem rgba(255, 215, 0, 0.25);
}

.text-danger {
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    font-size: 0.8rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row .form-group {
    margin-bottom: 0;
}

.half-width {
    flex: 1 1 50%;
}

.form-row .half-width input {
    max-width: 100%;
    box-sizing: border-box;
}

/* MOBILE: each field takes one full row */
@media (max-width: 767.98px) {
    .form-row {
        flex-direction: column;
        gap: 0.75rem;
    }

    .form-row .half-width {
        flex: 1 1 100%;
    }

    .form-row .half-width input,
    .form-row .half-width select {
        width: 100%;
    }
}

.promo-wrapper {
    margin-top: 1rem;
    padding: 0.75rem 0.5rem 0.5rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.2);
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.promo-label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.promo-row {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.25rem;
}

.apply-promo-btn {
    padding: 0.45rem 0.9rem;
    border-radius: 9px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    background: transparent;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease,
    color 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.apply-promo-btn:hover {
    background: var(--accent);
    color: #000;
    border-color: var(--accent);
    transform: translateY(-1px);
}

.promo-message {
    display: block;
    font-size: 0.85rem;
    min-height: 1.1rem;
}

.promo-message.text-success {
    color: #6ddf8b;
}

.promo-message.text-danger {
    color: #ff7b7b;
}

.cart-total-wrapper {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
    text-align: right;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.cart-total-label {
    display: inline-block;
}

.checkout-btn {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.85);
    padding: 0.65rem 1.2rem;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 9px;
    cursor: pointer;
    transition: background 0.25s ease, color 0.25s ease,
    border-color 0.25s ease, transform 0.1s ease;
    width: 100%;
    margin-top: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.checkout-btn:hover:not(:disabled) {
    background-color: var(--accent);
    color: #000;
    border-color: var(--accent);
    transform: translateY(-1px);
}

.checkout-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.empty-cart-modal,
.validation-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    padding: 1rem;
}

.empty-cart-modal .modal-content,
.validation-modal .modal-content {
    background: rgba(34, 34, 54, 0.97);
    padding: 2rem 2.3rem;
    border-radius: 12px;
    color: #f5f5f5;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
}

.empty-cart-modal p {
    margin: 0 0 1.2rem;
    font-size: 1rem;
}

.empty-cart-modal button,
.validation-modal .modal-content button {
    margin-top: 0.25rem;
    padding: 0.45rem 1.4rem;
    background-color: transparent;
    border-radius: 999px;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.25s ease, color 0.25s ease, transform 0.1s ease;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
}

.empty-cart-modal button:hover,
.validation-modal .modal-content button:hover {
    background-color: var(--accent);
    color: #000;
    transform: scale(1.03);
}

.validation-modal .modal-content h3 {
    margin-top: 0;
    margin-bottom: 0.9rem;
    font-size: 1.1rem;
}

.validation-modal .modal-content ul {
    list-style: disc inside;
    padding-left: 0;
    margin-bottom: 1.2rem;
    text-align: left;
    font-size: 0.9rem;
}

/* FOOTER */

.footer-nav {
    flex-shrink: 0;
    margin-top: auto;
}

@media (min-width: 1200px) {
    :root {
        --gap-desktop: 2rem;
        --content-max-width: 1000px;
        --navbar-height: 5rem;
    }

    .page-wrapper {
        padding: calc(var(--navbar-height) + 2.25rem) 1.5rem 3.25rem;
    }
}

@media (max-width: 1199.98px) and (min-width: 992px) {
    :root {
        --gap-desktop: 1.75rem;
        --content-max-width: 950px;
    }

    .cart-content-wrapper {
        max-width: var(--content-max-width);
    }
}

@media (max-width: 991.98px) and (min-width: 768px) {
    :root {
        --navbar-height: 4.25rem;
        --gap-desktop: 1.5rem;
        --page-horizontal-padding: 1.25rem;
    }

    .skylock-navbar {
        position: static !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
    }

    body {
        background-attachment: scroll;
    }

    .page-wrapper {
        padding: calc(var(--navbar-height) + 1.75rem) var(--page-horizontal-padding) 3rem;
    }

    .cart-content-wrapper {
        max-width: 90%;
    }

    .cart-items-column,
    .checkout-form-column {
        max-height: 70vh;
    }
}

@media (max-width: 767.98px) and (min-width: 576px) {
    :root {
        --navbar-height: 4rem;
        --gap-desktop: 1.25rem;
        --page-horizontal-padding: 1.25rem;
    }

    .skylock-navbar {
        position: static !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
    }

    body {
        background-attachment: scroll;
    }

    .page-wrapper {
        padding: calc(var(--navbar-height) + 1.5rem) var(--page-horizontal-padding) 2.75rem;
    }

    .cart-content {
        flex-direction: column;
    }

    .cart-content-wrapper {
        flex-direction: column;
        align-items: center;
        width: 90%;
        max-width: 100%;
    }

    .cart-items-column,
    .checkout-form-column {
        width: 100%;
        max-height: none;
        padding: 1.4rem 1.2rem;
    }

    .gallery-heading {
        font-size: 1.7rem;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.95rem;
        padding: 0.45rem 0.6rem;
    }

    .checkout-form label {
        font-size: 0.9rem;
    }
}

@media (max-width: 575.98px) {
    :root {
        --navbar-height: 3.75rem;
        --gap-desktop: 1rem;
        --page-horizontal-padding: 1rem;
    }

    .skylock-navbar {
        position: static !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
        width: 100% !important;
        max-width: 100% !important;
        border-radius: 0 !important;
    }

    body {
        background-attachment: scroll;
    }

    .page-wrapper {
        padding: calc(var(--navbar-height) + 1.35rem) var(--page-horizontal-padding) 2.5rem;
    }

    .cart-content {
        flex-direction: column;
    }

    .cart-content-wrapper {
        flex-direction: column;
        align-items: center;
        width: 95%;
        padding: 0 0.5rem;
        gap: 0.9rem;
    }

    .cart-items-column,
    .checkout-form-column {
        width: 100%;
        max-height: none;
        padding: 1.2rem 1.1rem;
    }

    .checkout-btn {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }

    .gallery-heading {
        font-size: 1.55rem;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.9rem;
        padding: 0.4rem 0.55rem;
    }

    .checkout-form label {
        font-size: 0.88rem;
    }
}

@media (max-width: 400px) {
    :root {
        --gap-desktop: 0.7rem;
        --page-horizontal-padding: 0.75rem;
    }

    .cart-content-wrapper {
        width: 98%;
        padding: 0 0.4rem;
        gap: 0.6rem;
    }

    .cart-items-column,
    .checkout-form-column {
        padding: 1.05rem;
    }

    .gallery-heading {
        font-size: 1.45rem;
        letter-spacing: 0.035em;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.85rem;
        padding: 0.35rem 0.5rem;
    }

    .checkout-form label {
        font-size: 0.84rem;
    }
}

@media (max-width: 360px) {
    :root {
        --gap-desktop: 0.5rem;
    }

    .cart-content-wrapper {
        width: 99%;
        gap: 0.4rem;
    }

    .cart-items-column,
    .checkout-form-column {
        padding: 0.9rem;
    }

    .gallery-heading {
        font-size: 1.4rem;
        letter-spacing: 0.03em;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.8rem;
        padding: 0.3rem 0.45rem;
    }

    .checkout-form label {
        font-size: 0.8rem;
    }
}

@media (max-width: 320px) {
    :root {
        --gap-desktop: 0.4rem;
    }

    .cart-content-wrapper {
        width: 99.4%;
    }

    .cart-items-column,
    .checkout-form-column {
        padding: 0.8rem;
    }

    .gallery-heading {
        font-size: 1.3rem;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.75rem;
        padding: 0.25rem 0.4rem;
    }

    .checkout-form label {
        font-size: 0.75rem;
    }
}

@media (max-width: 280px) {
    :root {
        --gap-desktop: 0.3rem;
    }

    .cart-content-wrapper {
        width: 99.6%;
        padding: 0 0.2rem;
    }

    .cart-items-column,
    .checkout-form-column {
        padding: 0.7rem;
    }

    .gallery-heading {
        font-size: 1.2rem;
    }

    .checkout-form input,
    .country-select {
        font-size: 0.7rem;
        padding: 0.2rem 0.35rem;
    }

    .checkout-form label {
        font-size: 0.7rem;
    }
}

@media (max-width: 900px) {
    .skylock-links {
        z-index: 99999 !important;
        position: absolute !important;
    }
}

.form-group,
.form-group.half-width,
.form-group.third-width {
    position: relative;
    overflow: visible;
}

.checkout-form .text-danger {
    display: none;
}

.field-error-tooltip {
    position: absolute;
    top: 0;
    right: 0.5rem;
    transform: translateY(20%);
    background-color: #f8d7da;
    color: #000000;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.65rem;
    font-family: 'Source Sans 3', sans-serif;
    line-height: 1.2;
    max-width: 500px;
    white-space: normal;
    z-index: 9999;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
}

.field-error-tooltip::after {
    content: "";
    position: absolute;
    left: 10px;
    bottom: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #f8d7da transparent transparent transparent;
}

.has-error input,
.has-error select {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.10rem rgba(220, 53, 69, 0.3);
}