/* ===================================
   DESIGN TOKENS
=================================== */
:root {
    --primary:       #1d4ed8;
    --primary-hover: #1e40af;
    --primary-light: #eff6ff;
    --success:       #16a34a;
    --success-hover: #15803d;
    --success-light: #f0fdf4;
    --danger:        #dc2626;
    --danger-light:  #fef2f2;
    --dark:          #0f172a;
    --dark-2:        #1e293b;
    --gray-50:       #f8fafc;
    --gray-100:      #f1f5f9;
    --gray-200:      #e2e8f0;
    --gray-400:      #94a3b8;
    --gray-500:      #64748b;
    --gray-700:      #334155;
    --white:         #ffffff;
    --text:          #1e293b;
    --text-muted:    #64748b;
    --border:        #e2e8f0;
    --radius-sm:     6px;
    --radius:        10px;
    --radius-lg:     14px;
    --shadow-sm:     0 1px 3px rgba(0,0,0,.08);
    --shadow:        0 4px 16px rgba(0,0,0,.08);
    --shadow-lg:     0 8px 32px rgba(0,0,0,.10);
    --font:          'Inter', Arial, sans-serif;
}

/* ===================================
   RESET & BASE
=================================== */
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font);
    font-size: 17px;
    line-height: 1.7;
    color: var(--text);
    background: var(--gray-50);
    margin: 0;
}

h1 { font-size: 36px; font-weight: 700; }
h2 { font-size: 26px; font-weight: 700; }
h3 { font-size: 20px; font-weight: 600; }
h4 { font-size: 17px; font-weight: 600; }

p  { color: var(--text-muted); font-size: 16px; line-height: 1.7; margin: 0 0 1rem; }

a  { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===================================
   BUTTONS
=================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 22px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background .2s, transform .1s, box-shadow .2s;
    white-space: nowrap;
}
.btn:hover        { text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active       { transform: scale(.98); }

.btn-primary      { background: var(--primary);  color: var(--white); }
.btn-primary:hover { background: var(--primary-hover); }

.btn-success      { background: var(--success);  color: var(--white); }
.btn-success:hover { background: var(--success-hover); }

.btn-dark         { background: var(--dark);      color: var(--white); }
.btn-dark:hover   { background: var(--dark-2); }

.btn-outline      { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }

.btn-ghost        { background: var(--gray-100); color: var(--text); }
.btn-ghost:hover  { background: var(--gray-200); }

.btn-wa           { background: #25D366; color: var(--white); font-size: 17px; }
.btn-wa:hover     { background: #1da851; }

.btn-sm  { padding: 8px 14px;  font-size: 14px; }
.btn-lg  { padding: 16px 30px; font-size: 18px; }
.btn-full { width: 100%; }

/* ===================================
   NAVBAR / HEADER
=================================== */
.main-header {
    background: var(--dark);
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1400px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    color: var(--white);
    font-size: 22px;
    font-weight: 700;
    text-decoration: none;
}

.main-nav { display: flex; gap: 4px; }
.main-nav a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: .2s;
}
.main-nav a:hover  { background: var(--dark-2); color: var(--white); text-decoration: none; }
.main-nav a.active { color: #4ade80; font-weight: 600; }

.user-nav { display: flex; gap: 10px; align-items: center; }

/* ===================================
   PAGE HERO
=================================== */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
    color: var(--white);
    padding: 90px 24px;
    text-align: center;
}
.hero h1      { font-size: 42px; margin-bottom: 16px; }
.hero p       { color: #94a3b8; font-size: 18px; max-width: 560px; margin: 0 auto 32px; }
.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.trust-bar {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: var(--white);
    padding: 16px 24px;
    flex-wrap: wrap;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}
.trust-bar span { font-size: 14px; color: var(--text-muted); font-weight: 500; }

/* ===================================
   CARDS
=================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform .2s, box-shadow .2s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* ===================================
   PRODUCT GRID
=================================== */
.products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    padding: 30px;
    max-width: 1400px;
    margin: auto;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: transform .2s, box-shadow .2s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.card-actions { margin-top: 16px; display: flex; gap: 10px; }

/* ===================================
   PRICE, BADGE, STOCK
=================================== */
.price {
    font-size: 28px;
    font-weight: 700;
    color: var(--success);
}
.price-note { font-size: 14px; color: var(--text-muted); display: block; margin-top: 2px; }
.price-box  { margin: 14px 0; }

.badge {
    display: inline-block;
    background: var(--danger-light);
    color: var(--danger);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

.stock { color: var(--danger); font-size: 15px; font-weight: 500; }

/* ===================================
   PRODUCT DETAIL PAGE
=================================== */
.product-container {
    display: flex;
    gap: 48px;
    max-width: 1400px;
    margin: 48px auto;
    padding: 0 24px;
}

.product-gallery { flex: 0 0 55%; }
.product-info    { flex: 1; }

.main-img {
    width: 100%;
    border-radius: var(--radius-lg);
    object-fit: cover;
}

.thumbs         { display: flex; gap: 10px; margin-top: 12px; }
.thumbs img     { width: 72px; height: 72px; object-fit: cover; border-radius: var(--radius); cursor: pointer; border: 2px solid var(--border); transition: border-color .2s; }
.thumbs img:hover { border-color: var(--primary); }

.desc           { color: var(--text-muted); margin: 16px 0; font-size: 16px; }
.meta p         { margin: 6px 0; font-size: 15px; }

.benefits       { padding-left: 20px; margin: 14px 0; color: var(--text-muted); }
.benefits li    { margin-bottom: 6px; }

.trust          { font-size: 14px; color: var(--text-muted); margin-top: 10px; }

/* ===================================
   FILTER BAR
=================================== */
.filter-bar {
    display: flex;
    gap: 12px;
    margin: 24px auto;
    padding: 0 24px;
    flex-wrap: wrap;
    max-width: 1400px;
}
.filter-bar input,
.filter-bar select {
    padding: 11px 14px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--text);
    outline: none;
    transition: border-color .2s;
}
.filter-bar input:focus,
.filter-bar select:focus { border-color: var(--primary); }

/* Search standalone */
#search {
    display: block;
    margin: 20px auto;
    padding: 13px 16px;
    width: 340px;
    max-width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 16px;
    outline: none;
}
#search:focus { border-color: var(--primary); }

/* ===================================
   FORMS
=================================== */
.form-box,
.offer-form {
    background: var(--white);
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.full { grid-column: span 2; }

label,
.form-label {
    font-weight: 600;
    font-size: 15px;
    color: var(--text);
    display: block;
    margin-bottom: 5px;
}

input,
textarea,
select {
    width: 100%;
    padding: 13px 14px;
    font-size: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--text);
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    font-family: var(--font);
}
input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(29,78,216,.10);
}
textarea { min-height: 120px; resize: vertical; }

.select-wrapper { position: relative; }
.select-wrapper select { padding-right: 36px; appearance: none; }
.select-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--gray-400);
}

input[type="file"] {
    padding: 10px;
    background: var(--gray-100);
    cursor: pointer;
}

.upload-box {
    border: 2px dashed var(--border);
    padding: 24px;
    text-align: center;
    border-radius: var(--radius);
    background: var(--gray-50);
    transition: border-color .2s;
}
.upload-box:hover { border-color: var(--primary); }

.delivery-options { display: flex; gap: 20px; margin-top: 10px; align-items: center; flex-wrap: wrap; }
.delivery-options label { display: flex; gap: 8px; align-items: center; font-weight: 500; }

/* ===================================
   TABLE
=================================== */
.table-wrapper,
.table-responsive { width: 100%; overflow-x: auto; }

.modern-table,
.responsive-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}
.modern-table th,
.responsive-table th {
    background: var(--dark);
    color: var(--white);
    text-align: left;
    padding: 16px 18px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.modern-table td,
.responsive-table td {
    padding: 15px 18px;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}
.modern-table tr:last-child td,
.responsive-table tr:last-child td { border-bottom: none; }
.modern-table tr:hover,
.responsive-table tr:hover { background: var(--gray-50); }

.article-link { color: var(--success); font-weight: 600; }
.article-link:hover { text-decoration: underline; }

/* ===================================
   AUTH PAGES
=================================== */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark);
    padding: 20px;
}
.auth-card {
    background: var(--white);
    padding: 44px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}
.auth-title    { text-align: center; font-size: 28px; margin-bottom: 6px; }
.auth-subtitle { text-align: center; color: var(--text-muted); margin-bottom: 24px; font-size: 15px; }
.auth-input    { width: 100%; padding: 13px; margin-bottom: 14px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 16px; }
.auth-btn      { width: 100%; padding: 14px; background: var(--primary); color: var(--white); border: none; border-radius: var(--radius); font-size: 17px; font-weight: 600; cursor: pointer; transition: background .2s; }
.auth-btn:hover { background: var(--primary-hover); }
.auth-link     { text-align: center; margin-top: 16px; font-size: 15px; }

.auth-error   { background: var(--danger-light); color: var(--danger); padding: 12px; border-radius: var(--radius); margin-bottom: 16px; font-size: 15px; }
.auth-success { background: var(--success-light); color: var(--success); padding: 12px; border-radius: var(--radius); margin-bottom: 16px; font-size: 15px; }

/* ===================================
   ADMIN LAYOUT
=================================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 240px;
    background: var(--dark);
    color: var(--white);
    padding: 24px 16px;
    flex-shrink: 0;
}
.admin-sidebar h2   { font-size: 18px; margin-bottom: 24px; color: var(--white); padding: 0; }
.admin-sidebar a    { display: block; color: #94a3b8; text-decoration: none; padding: 10px 12px; border-radius: var(--radius-sm); margin-bottom: 4px; font-size: 15px; transition: .2s; }
.admin-sidebar a:hover  { background: var(--dark-2); color: var(--white); }
.admin-sidebar a.active { background: var(--dark-2); color: var(--white); font-weight: 600; }

.admin-main    { flex: 1; padding: 36px; background: var(--gray-50); }
.admin-card    { background: var(--white); padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow); }

/* ===================================
   ADMIN FORM
=================================== */
.section-title { font-size: 18px; font-weight: 600; color: var(--text); margin: 28px 0 10px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.full   { grid-column: span 2; }

.variant-row  { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 10px; margin-top: 10px; }
.variant-card { background: var(--gray-50); padding: 14px; border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 10px; }

.success-box { background: var(--success); color: var(--white); padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 15px; }

/* ===================================
   MOBILE HEADER (admin)
=================================== */
.mobile-header {
    display: none;
    background: var(--dark);
    color: var(--white);
    padding: 14px 16px;
    font-size: 18px;
    align-items: center;
    gap: 12px;
}
.menu-btn { background: none; border: none; color: var(--white); font-size: 24px; cursor: pointer; padding: 0; }

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    display: none;
    z-index: 998;
}
.overlay.show { display: block; }

/* ===================================
   STICKY SAVE (mobile)
=================================== */
.sticky-save { display: none; }

/* ===================================
   CTA SECTION
=================================== */
.cta {
    background: var(--primary);
    color: var(--white);
    text-align: center;
    padding: 60px 24px;
    margin-top: 48px;
}
.cta h2   { color: var(--white); margin-bottom: 12px; }
.cta p    { color: rgba(255,255,255,.8); max-width: 480px; margin: 0 auto 28px; }

/* ===================================
   UTILITY
=================================== */
.container      { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.page-title     { font-size: 30px; font-weight: 700; margin-bottom: 24px; }
.article-box    { background: var(--white); padding: 28px; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.offer-container { max-width: 920px; margin: 48px auto; padding: 0 24px; }
.card-grid      { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.article-card   { background: var(--white); padding: 22px; border-radius: var(--radius-lg); box-shadow: var(--shadow); border: 1px solid var(--border); text-align: center; }
.article-card h3 { margin-bottom: 14px; }
.desktop-only   {}

/* ===================================
   RESPONSIVE
=================================== */
@media (max-width: 768px) {

    h1 { font-size: 28px; }
    h2 { font-size: 22px; }

    .product-container { flex-direction: column; }
    .product-gallery,
    .product-info       { flex: unset; max-width: 100%; width: 100%; }

    .form-grid          { grid-template-columns: 1fr; }
    .form-group.full    { grid-column: span 1; }
    .grid-2             { grid-template-columns: 1fr; }
    .full               { grid-column: span 1; }
    .variant-row        { grid-template-columns: 1fr; }

    .hero               { padding: 60px 20px; }
    .hero h1            { font-size: 30px; }

    .products           { padding: 16px; gap: 16px; }

    .trust-bar          { flex-direction: column; text-align: center; }

    /* Admin sidebar mobile */
    .mobile-header      { display: flex; }
    .admin-layout       { flex-direction: column; }
    .admin-sidebar {
        position: fixed;
        left: -260px;
        top: 0;
        height: 100%;
        width: 240px;
        z-index: 999;
        transition: left .3s;
        overflow-y: auto;
    }
    .admin-sidebar.open { left: 0; }
    .admin-main         { padding: 16px; }

    .desktop-only       { display: none; }
    .sticky-save {
        display: block;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 12px 16px;
        box-shadow: 0 -4px 16px rgba(0,0,0,.10);
        z-index: 1000;
    }
    .sticky-save .btn { width: 100%; padding: 16px; font-size: 17px; }

    body { padding-bottom: 80px; }

    /* Mobile table */
    .modern-table thead,
    .responsive-table thead { display: none; }
    .modern-table tr,
    .responsive-table tr    { display: block; margin-bottom: 14px; border: 1px solid var(--border); border-radius: var(--radius); padding: 10px; background: var(--white); }
    .modern-table td,
    .responsive-table td    { display: flex; justify-content: space-between; padding: 9px 10px; border: none; border-bottom: 1px solid var(--border); font-size: 14px; }
    .modern-table td:last-child,
    .responsive-table td:last-child { border-bottom: none; }
    .modern-table td::before,
    .responsive-table td::before    { content: attr(data-label); font-weight: 600; color: var(--text-muted); }
}