:root {
    --primary: #960000; /* Signature Imza Pack Red */
    --nav-bg: #1a1a1a; /* Dark charcoal instead of Navy blue */
    --sidebar-bg: #f8f9fa;
    --text-main: #333;
    --text-light: #666;
    --border-color: #e0e0e0;
    --card-hover: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: #fff;
    color: var(--text-main);
}

/* Navbar */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    flex: 1;
}

.logo img {
    height: 40px;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-center .page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--nav-bg);
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 20px;
    flex: 1;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 14px;
}

.nav-links .btn-admin {
    border: 1px solid var(--nav-bg);
    padding: 8px 16px;
    border-radius: 4px;
    color: var(--nav-bg);
    transition: 0.2s;
}

.nav-links .btn-admin:hover {
    background-color: var(--nav-bg);
    color: #fff;
}

/* Layout */
.container {
    display: flex;
    min-height: calc(100vh - 71px);
}

.sidebar {
    width: 350px;
    background-color: var(--sidebar-bg);
    padding: 30px;
    border-right: 1px solid var(--border-color);
}

.sidebar h2 {
    font-size: 18px;
    color: var(--nav-bg);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.param-group {
    margin-bottom: 20px;
}

.param-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-main);
}

.param-row {
    display: flex;
    gap: 15px;
}

.param-group.half {
    flex: 1;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.option-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px 10px;
    text-align: center;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.option-card .opt-img {
    height: 50px;
    object-fit: contain;
    margin-bottom: 5px;
}

.option-card span {
    font-size: 12px;
    font-weight: 500;
}

.option-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.option-card.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.input-field {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    outline: none;
    transition: 0.2s;
}

.input-field:focus {
    border-color: var(--nav-bg);
}

.btn-primary {
    width: 100%;
    background-color: var(--primary);
    color: #fff;
    border: none;
    padding: 15px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
    transition: 0.2s;
}

.btn-primary:hover {
    background-color: #750000;
}

/* Content Area */
.content {
    flex: 1;
    padding: 50px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background-color: #fff;
}

.scope-card {
    width: 100%;
    max-width: 800px;
}

.empty-state {
    text-align: center;
    padding: 60px 40px;
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    background-color: #fafafa;
}

.empty-state .icon-large {
    font-size: 48px;
    margin-bottom: 20px;
    display: inline-block;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 22px;
    color: var(--nav-bg);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--text-light);
    font-size: 15px;
}

.hidden {
    display: none !important;
}

/* Determined State */
.determined-state h3 {
    font-size: 20px;
    color: var(--nav-bg);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.summary-box {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.box-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.box-value {
    display: block;
    font-size: 20px;
    font-weight: 700;
    color: var(--nav-bg);
}

.quote-form-section {
    background-color: var(--nav-bg);
    border-radius: 8px;
    padding: 30px;
    color: #fff;
}

.quote-form-section h4 {
    font-size: 18px;
    margin-bottom: 10px;
}

.quote-form-section p {
    font-size: 13px;
    opacity: 0.8;
    margin-bottom: 25px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.form-input {
    width: 100%;
    padding: 12px 15px;
    background-color: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 4px;
    color: #fff;
    outline: none;
    transition: 0.2s;
}

.form-input::placeholder {
    color: rgba(255,255,255,0.5);
}

.form-input:focus {
    border-color: rgba(255,255,255,0.5);
    background-color: rgba(255,255,255,0.1);
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background-color: #fff;
    color: var(--primary);
    border: none;
    border-radius: 4px;
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: 0.2s;
}

.btn-submit:hover {
    background-color: #f0f0f0;
}

/* ============================================== */
/* MOBILE RESPONSIVENESS                          */
/* ============================================== */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
        padding: 20px 15px;
    }
    .top-nav {
        flex-direction: column;
        padding: 15px;
        gap: 15px;
    }
    .nav-links {
        justify-content: center;
    }
    .content {
        padding: 20px 15px;
        min-width: 0;
    }
    .scope-card {
        min-width: 0;
    }
    .options-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    .param-row {
        flex-direction: column;
        gap: 10px;
    }
}

/* Telefon (<=600px): tek sütunlu form, kart görünümlü sepet, 16px alanlar */
@media (max-width: 600px) {
    .top-nav {
        gap: 8px;
    }
    .nav-center .page-title {
        font-size: 18px;
    }

    /* iOS Safari 16px altı alanlara odaklanınca zoom yapar */
    .input-field,
    .form-input {
        font-size: 16px;
    }
    .input-field {
        min-height: 44px;
    }
    .form-input {
        min-height: 48px;
    }
    .btn-primary,
    .btn-submit {
        min-height: 48px;
    }

    .quote-form-section {
        padding: 20px 15px;
    }
    .form-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    /* Sepet: tablo yerine kart (satır içi stilleri ezmek için !important) */
    #cartContainer table,
    #cartContainer tbody {
        display: block;
        width: 100%;
    }
    #cartContainer thead {
        display: none;
    }
    #cartContainer tr {
        display: grid;
        grid-template-columns: 1fr auto auto;
        grid-template-areas:
            "name  name  remove"
            "print qty   qty";
        align-items: center;
        gap: 6px 10px;
        padding: 12px 0;
        border-bottom: 1px solid #eee;
    }
    #cartContainer td {
        display: block;
        padding: 0 !important;
        border: none !important;
        min-width: 0;
    }
    #cartContainer td:nth-child(1) {
        grid-area: name;
        overflow-wrap: anywhere;
    }
    #cartContainer td:nth-child(2) {
        grid-area: print;
        font-size: 13px;
        color: var(--text-light);
    }
    #cartContainer td:nth-child(3) {
        grid-area: qty;
    }
    #cartContainer td:nth-child(4) {
        grid-area: remove;
        text-align: right !important;
    }
    #cartContainer .btn-qty-minus,
    #cartContainer .btn-qty-plus {
        width: 40px !important;
        height: 40px !important;
        font-size: 18px;
    }
    #cartContainer .cart-qty-input {
        width: 88px !important;
        height: 40px;
        font-size: 16px;
    }
    #cartContainer .btn-remove {
        width: 44px;
        height: 44px;
        font-size: 24px !important;
    }
}

/* Bildirimler (app.js showToast) */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 16px;
    left: 16px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    pointer-events: none;
}
.toast {
    background: #1e293b;
    border-left: 4px solid var(--primary);
    color: #fff;
    padding: 14px 20px;
    border-radius: 6px;
    margin-top: 10px;
    max-width: 420px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
    font-size: 14px;
    font-weight: 600;
    opacity: 0;
    transform: translateY(20px);
    animation: toastIn 0.3s forwards, toastOut 0.3s 2.7s forwards;
}
@keyframes toastIn { to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { to { opacity: 0; transform: translateY(-20px); } }
#btnSubmitQuote[disabled] { opacity: 0.6; cursor: wait; }

/* Klavye odağı: outline:none kullanan alanlarda görünür odak halkası */
.input-field:focus-visible,
.form-input:focus-visible,
.option-card:focus-visible,
.btn-primary:focus-visible,
.btn-submit:focus-visible,
#cartContainer button:focus-visible,
#cartContainer input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
.form-input:focus-visible,
.btn-submit:focus-visible {
    outline-color: #fff;
}

/* Görselli ürün kartları */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    max-height: 440px;
    overflow-y: auto;
    padding: 2px;
}
.product-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.2s, box-shadow 0.2s;
    min-width: 0;
}
.product-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}
.product-card.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary);
}
.product-card-img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: #f7f7f7;
    border-radius: 4px;
}
.product-card-name {
    font-size: 12px;
    font-weight: 600;
    line-height: 1.3;
    overflow-wrap: anywhere;
}
.product-card-meta {
    font-size: 11px;
    color: #666;
}
.product-card-meta:empty {
    display: none;
}
.product-card:focus-visible,
.product-preview-zoom:focus-visible,
.lightbox-close:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.product-preview {
    margin-top: 15px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px;
}
.product-preview[hidden] {
    display: none;
}
.product-preview-zoom {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    border: none;
    background: #f7f7f7;
    border-radius: 4px;
    cursor: zoom-in;
}
.product-preview-zoom img {
    display: block;
    width: 100%;
    height: auto;
    min-height: 120px;
    max-height: 260px;
    object-fit: contain;
}
.product-preview-hint {
    position: absolute;
    right: 8px;
    bottom: 8px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 10px;
}
.product-preview-name {
    display: block;
    margin-top: 8px;
    font-size: 13px;
    line-height: 1.3;
}

.cart-product {
    display: flex;
    align-items: center;
    gap: 10px;
}
.cart-thumb {
    width: 48px;
    height: 48px;
    object-fit: contain;
    background: #f7f7f7;
    border-radius: 4px;
    flex-shrink: 0;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.lightbox[hidden] {
    display: none;
}
.lightbox img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    background: #fff;
    border-radius: 6px;
}
.lightbox-close {
    position: absolute;
    top: 12px;
    right: 16px;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: #fff;
    color: #111;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
}

@media (max-width: 900px) {
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        max-height: 520px;
    }
    .product-preview-zoom img {
        max-height: 320px;
    }
}