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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: #0b0d10;
    background-image: radial-gradient(circle at 50% 0%, #17191c 0%, #0b0d10 55%, #000000 100%);
    background-attachment: fixed;
    color: #f5f7fa;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
}

/* Header */
.header {
    background-color: #000;
    border-bottom: 1px solid #26282c;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    min-height: 120px;
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    height: 100%;
    flex-shrink: 0;
}

.logo img {
    height: 90px;
    width: auto;
    max-width: 340px;
    object-fit: contain;
}

.nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    color: #e4e6eb;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.2s ease;
    opacity: 0.85;
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
    color: #22d3ee;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 8px;
}

/* Main Content */
.main-content {
    padding-top: 140px;
    padding-bottom: 24px;
    min-height: 100vh;
}

.container {
    display: flex;
    align-items: flex-start;
    max-width: 1600px;
    margin: 0 auto;
    padding: 24px;
    gap: 24px;
}

/* Controller Area */
.controller-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    min-width: 0;
}

.back-button {
    width: 100%;
    margin-bottom: 24px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: rgba(245, 247, 250, 0.85);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    transition: color 0.2s ease;
}

.back-link:hover {
    color: #22d3ee;
}

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

.platform-switch-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 22px;
    border-radius: 12px;
    border: 1px solid #3a3b40;
    background-color: rgba(255, 255, 255, 0.04);
    color: #e4e6eb;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition: all 0.25s ease;
}

.platform-switch-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.platform-switch-btn:hover {
    border-color: #e62020;
    color: #fff;
    background-color: rgba(230, 32, 32, 0.1);
    transform: translateY(-2px);
}

.platform-switch-btn.active {
    background-color: #e62020;
    border-color: #e62020;
    color: #fff;
    box-shadow: 0 10px 20px -10px rgba(230, 32, 32, 0.65);
}

.controller-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    width: 100%;
    max-width: 600px;
}

.controller-front {
    width: 100%;
    display: flex;
    justify-content: center;
}

.controller-layers {
    position: relative;
    width: 100%;
    max-width: 600px;
    aspect-ratio: 1.5 / 1;
}

.controller-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.3s ease;
}

.base-layer {
    z-index: 1;
}

.color-layer {
    z-index: 2;
    opacity: 0;
}

.color-layer.active {
    opacity: 1;
}

.rotate-button {
    margin-top: 16px;
}

.rotate-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid #26282c;
    color: #fff;
    padding: 12px 24px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.25s ease;
}

.rotate-btn:hover {
    background: rgba(34, 211, 238, 0.12);
    border-color: #22d3ee;
    color: #22d3ee;
}

/* Customization Panel */
.customization-panel {
    width: 35%;
    min-width: 350px;
    background-color: #121212;
    border: 1px solid #232427;
    border-radius: 18px;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 148px);
    position: sticky;
    top: 132px;
    overflow: hidden;
}

.price-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 24px;
    border-bottom: 1px solid #232427;
}

.price {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
}

.order-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: #e62020;
    border: none;
    color: #fff;
    padding: 14px 26px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    box-shadow: 0 10px 25px -10px rgba(230, 32, 32, 0.6);
}

.order-btn:hover {
    background-color: #c81919;
    transform: translateY(-2px);
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    gap: 8px;
    padding: 16px;
    overflow-x: auto;
    border-bottom: 1px solid #232427;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.tabs-nav::-webkit-scrollbar {
    height: 4px;
}

.tabs-nav::-webkit-scrollbar-track {
    background: transparent;
}

.tabs-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
}

.tab-btn {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border: 2px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    padding: 4px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.25s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tab-btn.active {
    border-color: #22d3ee;
    background: rgba(34, 211, 238, 0.1);
}

.tab-btn img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 4px;
}

/* Tab Content */
.tab-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.tab-content::-webkit-scrollbar {
    width: 6px;
}

.tab-content::-webkit-scrollbar-track {
    background: transparent;
}

.tab-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.tab-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* Color Options */
.color-group {
    margin-bottom: 32px;
}

.group-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: #9aa0aa;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.color-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 12px;
}

.color-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px;
    border: 2px solid transparent;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: all 0.25s ease;
}

.color-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.color-btn.active {
    border-color: #22d3ee;
    background: rgba(34, 211, 238, 0.1);
}

.color-preview {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.color-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.color-btn:hover .color-preview {
    transform: scale(1.1);
}

.color-name {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
}

.color-price {
    font-size: 0.7rem;
    color: #22d3ee;
    font-weight: 600;
}

/* Footer */
.footer {
    background-color: #000;
    border-top: 1px solid #1d1f22;
    padding: 20px 24px;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1600px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-content p {
    font-size: 0.7rem;
    color: #6b6f76;
    letter-spacing: 0.03em;
}

.footer-content strong {
    color: #9aa0aa;
}

.footer-content a {
    color: #22d3ee;
    font-weight: 600;
    text-decoration: none;
}

.footer-content a:hover {
    color: #fff;
}

/* ============ Order / Quote Modal ============ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
}

.modal-overlay.active {
    display: flex;
}

body.modal-open {
    overflow: hidden;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    background-color: #121212;
    border: 1px solid #232427;
    border-radius: 20px;
    padding: 40px 32px 32px;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.6);
    animation: modal-pop 0.25s ease;
}

@keyframes modal-pop {
    from {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid #2c2d31;
    background-color: rgba(255, 255, 255, 0.04);
    color: #9aa0aa;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-close:hover {
    color: #fff;
    border-color: #e62020;
    background-color: rgba(230, 32, 32, 0.1);
}

.modal-eyebrow {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #22d3ee;
    margin-bottom: 8px;
}

.modal-body h3,
.modal-success h3 {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 20px;
}

.modal-quote {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-radius: 14px;
    background-color: rgba(230, 32, 32, 0.08);
    border: 1px solid rgba(230, 32, 32, 0.3);
    margin-bottom: 24px;
}

.modal-quote span {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #9aa0aa;
}

.modal-quote strong {
    font-size: 1.4rem;
    font-weight: 800;
    color: #fff;
}

.order-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.order-form label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #9aa0aa;
}

.order-form input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid #2c2d31;
    background-color: #1a1a1a;
    color: #f5f7fa;
    font-family: inherit;
    font-size: 0.9rem;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.order-form input::placeholder {
    color: #5c6068;
}

.order-form input:focus {
    outline: none;
    border-color: #22d3ee;
    background-color: #1e1e1e;
}

.order-form input:invalid:not(:placeholder-shown) {
    border-color: #e62020;
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 8px;
}

.payment-method-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 14px 8px;
    border-radius: 12px;
    border: 1px solid #2c2d31;
    background-color: rgba(255, 255, 255, 0.03);
    color: #9aa0aa;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.payment-method-btn:hover {
    border-color: #e62020;
    color: #fff;
}

.payment-method-btn.active {
    background-color: #e62020;
    border-color: #e62020;
    color: #fff;
    box-shadow: 0 10px 20px -12px rgba(230, 32, 32, 0.7);
}

.payment-fields {
    padding: 16px;
    border-radius: 12px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid #232427;
    animation: fields-in 0.2s ease;
}

@keyframes fields-in {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-note {
    font-size: 0.75rem;
    color: #6b6f76;
    line-height: 1.5;
}

.btn-submit-order {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 12px;
    background-color: #e62020;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    box-shadow: 0 10px 25px -10px rgba(230, 32, 32, 0.6);
    transition: all 0.2s ease;
}

.btn-submit-order:hover {
    background-color: #c81919;
    transform: translateY(-2px);
}

/* Success view */
.modal-success {
    text-align: center;
    padding: 12px 0 4px;
}

.modal-success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(34, 211, 238, 0.12);
    color: #22d3ee;
}

.modal-success p {
    font-size: 0.9rem;
    color: #9aa0aa;
    line-height: 1.6;
    margin-bottom: 28px;
}

.modal-success p strong {
    color: #f5f7fa;
}

.btn-outline-modal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: 10px;
    border: 1px solid #3a3b40;
    background-color: transparent;
    color: #e4e6eb;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-outline-modal:hover {
    border-color: #22d3ee;
    color: #22d3ee;
}

/* ============ Responsive Design ============ */
@media (max-width: 1200px) {
    .customization-panel {
        width: 42%;
    }
}

@media (max-width: 992px) {
    .container {
        flex-direction: column;
        padding: 16px;
    }

    .controller-area {
        width: 100%;
        padding: 16px;
    }

    .customization-panel {
        width: 100%;
        min-width: auto;
        max-height: none;
        position: static;
        border-radius: 16px;
    }

    .nav {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: rgba(0, 0, 0, 0.97);
        backdrop-filter: blur(16px);
        padding: 8px 24px 20px;
        border-bottom: 1px solid #26282c;
        z-index: 999;
    }

    .nav.mobile-active {
        display: flex;
    }

    .nav-link {
        padding: 14px 4px;
        font-size: 0.95rem;
        border-bottom: 1px solid #1d1f22;
        text-align: center;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .controller-layers {
        max-width: 480px;
    }
}

@media (max-width: 720px) {
    .header-content {
        padding: 0 16px;
        min-height: 68px;
    }

    .main-content {
        padding-top: 84px;
    }

    .logo img {
        height: 50px;
        max-width: 200px;
    }

    .back-button {
        justify-content: space-between;
        gap: 12px;
    }

    .back-link {
        font-size: 0.9rem;
    }

    .price-section {
        flex-wrap: wrap;
    }

    .price {
        font-size: 1.3rem;
    }

    .order-btn {
        padding: 12px 20px;
        font-size: 0.75rem;
    }

    .controller-layers {
        max-width: 100%;
    }

    .color-grid {
        grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    }

    .modal {
        padding: 32px 22px 24px;
    }

    .form-row-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 12px;
        gap: 16px;
    }

    .controller-area {
        padding: 12px;
    }

    .back-button {
        flex-direction: column;
        align-items: flex-start;
    }

    .platform-switch {
        width: 100%;
    }

    .platform-switch-btn {
        flex: 1;
        justify-content: center;
        padding: 10px 12px;
    }

    .tab-btn {
        width: 52px;
        height: 52px;
    }

    .color-grid {
        grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
        gap: 8px;
    }

    .color-preview {
        width: 34px;
        height: 34px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        max-height: 92vh;
        border-radius: 20px 20px 0 0;
        padding: 28px 18px 20px;
        animation: modal-pop-mobile 0.25s ease;
    }

    @keyframes modal-pop-mobile {
        from {
            opacity: 0;
            transform: translateY(24px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .payment-methods {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .payment-method-btn {
        font-size: 0.62rem;
        padding: 10px 4px;
    }
}