/**
 * MixPNG - Minimal Black, Red & White Theme
 * Clean, Modern & Professional Design
 */

/* ========== CSS VARIABLES ========== */
:root {
    /* Color Palette - Black, Red, White */
    --primary-color: #dc143c; /* Crimson Red */
    --primary-dark: #b8112f;
    --primary-light: #ff2550;

    --black: #0a0a0a;
    --black-light: #1a1a1a;
    --black-lighter: #2a2a2a;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e0e0e0;
    --gray-300: #c0c0c0;
    --gray-400: #a0a0a0;
    --gray-500: #808080;

    /* Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f9f9f9;
    --bg-tertiary: #f2f2f2;
    --text-primary: #0a0a0a;
    --text-secondary: #4a4a4a;
    --text-muted: #808080;
    --border-color: #e5e5e5;
    --shadow: rgba(0, 0, 0, 0.08);
    --shadow-lg: rgba(0, 0, 0, 0.12);

    --card-bg: #ffffff;
    --navbar-bg: #ffffff;
    --footer-bg: #0a0a0a;
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #c0c0c0;
    --text-muted: #808080;
    --border-color: #2a2a2a;
    --shadow: rgba(255, 255, 255, 0.05);
    --shadow-lg: rgba(255, 255, 255, 0.08);

    --card-bg: #1a1a1a;
    --navbar-bg: #0a0a0a;
    --footer-bg: #000000;
}

/* ========== GLOBAL RESET ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ========== TYPOGRAPHY ========== */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

/* ========== NAVIGATION ========== */
.navbar {
    background-color: var(--navbar-bg) !important;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary) !important;
    letter-spacing: -0.02em;
}

.navbar-brand:hover {
    color: var(--primary-color) !important;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    color: var(--text-secondary) !important;
    transition: color 0.2s ease;
    letter-spacing: -0.01em;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link.active {
    color: var(--primary-color) !important;
}

/* Mobile Toggle */
.navbar-toggler {
     border: none;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    color: #dc143c;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    width: 20px;
    height: 20px;
}

/* Search in Navbar */
.navbar .form-control {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.navbar .form-control:focus {
    background: var(--bg-primary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.1);
}

.navbar .form-control::placeholder {
    color: var(--text-muted);
}

/* ========== THEME TOGGLE ========== */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.theme-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ========== HERO SECTION ========== */
.hero-section {
    background: var(--black);
    color: white;
    padding: 4rem 0 3rem;
    position: relative;
    border-bottom: 3px solid var(--primary-color);
}

.hero-section h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: white;
    letter-spacing: -0.03em;
}

.hero-section p {
    font-size: 1rem;
    opacity: 0.8;
    font-weight: 400;
}

/* Search Form */
.search-form .input-group {
    max-width: 650px;
    margin: 0 auto;
}

.search-form .form-control {
    border: none;
    padding: 0.75rem 1.25rem;
    font-size: 0.95rem;
    background: white;
    color: var(--black);
    border-radius: 4px 0 0 4px;
}

.search-form .form-control:focus {
    box-shadow: none;
    outline: 2px solid var(--primary-color);
}

.search-form .form-select {
    border: none;
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
    max-width: 180px;
    background: white;
    color: var(--black);
    border-left: 1px solid #e5e5e5;
}

.search-form .btn {
    padding: 0.75rem 2rem;
    border: none;
    background: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 0 4px 4px 0;
    letter-spacing: -0.01em;
}

.search-form .btn:hover {
    background: var(--primary-dark);
}

/* Popular Tags */
.popular-tags {
    margin-top: 1.5rem;
}

.popular-tags .badge {
    padding: 0.4rem 0.85rem;
    margin: 0.25rem;
    font-weight: 500;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    transition: all 0.2s;
    cursor: pointer;
    border-radius: 4px;
    letter-spacing: -0.01em;
}

.popular-tags .badge:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ========== SECTIONS ========== */
.section-header {
    margin-bottom: 2rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
}

.section-header .text-muted {
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* ========== CATEGORY CARDS ========== */
.category-card .card {
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    transition: all 0.2s ease;
    cursor: pointer;
    border-radius: 6px;
    overflow: hidden;
}

.category-card .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-lg);
    border-color: var(--primary-color);
}

.category-card .card-body {
    padding: 1.25rem;
    text-align: center;
}

.category-card .card-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    margin-top: 0.5rem;
    letter-spacing: -0.01em;
}

.category-card i {
    font-size: 2rem;
    color: var(--primary-color);
}

.category-card .badge {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.25rem 0.6rem;
}

/* ========== PNG CARDS ========== */
.png-card {
    margin-bottom: 1.25rem;
}

.png-card .card {
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    transition: all 0.2s ease;
    overflow: hidden;
    border-radius: 6px;
    height: 100%;
}

.png-card .card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px var(--shadow-lg);
    border-color: var(--primary-color);
}

.png-image-wrapper {
    position: relative;
    overflow: hidden;
    background:
        repeating-conic-gradient(#f0f0f0 0% 25%, white 0% 50%)
        50% / 20px 20px;
    padding: 1.25rem;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .png-image-wrapper {
    background:
        repeating-conic-gradient(#1a1a1a 0% 25%, #0a0a0a 0% 50%)
        50% / 20px 20px;
}

.png-image-wrapper img {
    width: 100%;
    height: auto;
    object-fit: contain;
    max-height: 180px;
    transition: transform 0.3s;
}

.png-card:hover .png-image-wrapper img {
    transform: scale(1.05);
}

.png-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.png-overlay i {
    color: var(--primary-color);
    font-size: 2.5rem;
}

.png-card:hover .png-overlay {
    opacity: 1;
}

.png-card .card-body {
    padding: 0.85rem;
    background: var(--card-bg);
}

.png-card .card-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    letter-spacing: -0.01em;
}

.trending-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--primary-color);
    color: white;
    padding: 0.3rem 0.7rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
    letter-spacing: -0.01em;
}

/* ========== BUTTONS ========== */
.btn {
    font-weight: 500;
    padding: 0.6rem 1.25rem;
    border-radius: 4px;
    transition: all 0.2s;
    border: none;
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 20, 60, 0.3);
}

.btn-outline-primary {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

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

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1rem;
}

/* ========== BADGES ========== */
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
    font-size: 0.8rem;
    border-radius: 3px;
    letter-spacing: -0.01em;
}

.badge.bg-primary {
    background: var(--primary-color) !important;
}

.badge.bg-light {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .badge.bg-light {
    background: var(--bg-tertiary) !important;
}

/* ========== CARDS ========== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s;
}

.card-header {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.85rem 1.25rem;
    font-size: 0.95rem;
}

.card-body {
    color: var(--text-primary);
    padding: 1.25rem;
}

.hover-shadow:hover {
    box-shadow: 0 8px 20px var(--shadow-lg) !important;
}

/* ========== FORMS ========== */
.form-control,
.form-select {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 0.85rem;
    border-radius: 4px;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.form-control:focus,
.form-select:focus {
    background-color: var(--bg-primary);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(220, 20, 60, 0.1);
    color: var(--text-primary);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-control-lg {
    padding: 0.85rem 1.25rem;
    font-size: 1rem;
}

/* ========== ALERTS ========== */
.alert {
    border-radius: 4px;
    border: none;
    padding: 0.85rem 1.25rem;
    font-size: 0.9rem;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
}

[data-theme="dark"] .alert-success {
    background: rgba(40, 167, 69, 0.2);
    color: #6dd896;
}

[data-theme="dark"] .alert-danger {
    background: rgba(220, 53, 69, 0.2);
    color: #f8a8b0;
}

/* ========== BREADCRUMBS ========== */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.breadcrumb-item {
    color: var(--text-secondary);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-muted);
}

/* ========== PAGINATION ========== */
.pagination {
    margin-top: 2rem;
}

.pagination .page-link {
    color: var(--primary-color);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 0.6rem 0.85rem;
    margin: 0 0.15rem;
    border-radius: 4px;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.pagination .page-link:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
}

.pagination .page-item.active .page-link {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ========== FOOTER ========== */
footer {
    background: var(--footer-bg);
    color: rgba(255, 255, 255, 0.7);
    margin-top: 3rem;
    border-top: 3px solid var(--primary-color);
}

footer h5 {
    color: white;
    font-weight: 600;
    margin-bottom: 0.85rem;
    font-size: 1rem;
}

footer a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
    font-size: 0.9rem;
}

footer a:hover {
    color: var(--primary-color) !important;
    transform: translateX(3px);
}

footer .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    margin-right: 0.4rem;
    transition: all 0.2s;
}

footer .social-links a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* ========== BACK TO TOP ========== */
#backToTop {
    position: fixed;
    bottom: 25px;
    right: 25px;
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 4px;
    background: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    z-index: 1000;
    transition: all 0.2s;
    font-size: 1.1rem;
}

#backToTop:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

#backToTop.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========== LAZY LOADING ========== */
img.lazy {
    opacity: 0;
    transition: opacity 0.4s;
}

img.lazy.loaded {
    opacity: 1;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ========== DROPDOWN ========== */
.dropdown-menu {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 12px var(--shadow-lg);
    border-radius: 6px;
    padding: 0.5rem;
    font-size: 0.9rem;
}

.dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 0.85rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

/* ========== TABLES ========== */
.table {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.table > :not(caption) > * > * {
    background-color: var(--card-bg);
    border-bottom-color: var(--border-color);
    padding: 0.75rem;
}

.table-light {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.table-hover > tbody > tr:hover > * {
    background-color: var(--bg-secondary);
}

/* ========== TEXT COLORS ========== */
.text-muted {
    color: var(--text-muted) !important;
}

.text-dark {
    color: var(--text-primary) !important;
}

.small, small {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .hero-section h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .hero-section {
        padding: 3rem 0 2rem;
    }

    .hero-section h1 {
        font-size: 1.75rem;
    }

    .hero-section p {
        font-size: 0.9rem;
    }

    .section-header h2 {
        font-size: 1.35rem;
    }

    #backToTop {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .navbar .input-group {
        margin-top: 0.75rem;
    }

    .search-form .form-select {
        max-width: 140px;
    }

    .btn {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 576px) {
    .png-image-wrapper {
        min-height: 150px;
        padding: 1rem;
    }

    .png-image-wrapper img {
        max-height: 120px;
    }

    .category-card i {
        font-size: 1.75rem;
    }

    .search-form .input-group {
        flex-direction: column;
    }

    .search-form .form-control,
    .search-form .form-select,
    .search-form .btn {
        border-radius: 4px;
        max-width: 100%;
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

/* ========== UTILITIES ========== */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}


.text-primary {
    --bs-text-opacity: 1;
    color: #dc3545 !important;
}