/* certificates.css (v10 - Click Fix & UI Polish) */
:root {
    --font-family: 'Inter', sans-serif;
    --ease-out-cubic: cubic-bezier(0.215, 0.61, 0.355, 1);
    --ease-in-out-quad: cubic-bezier(0.455, 0.03, 0.515, 0.955);
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 18px rgba(0,0,0,0.08);
    --shadow-xl: 0 12px 28px rgba(0,0,0,0.1);


    /* Light Theme Variables */
    --bg-color-light: #f8faff;
    --text-color-light: #1a1d21;
    --text-secondary-light: #525860;
    --card-bg-color-light: #ffffff;
    --border-color-light: #e1e4e8;
    --input-bg-color-light: #ffffff;
    --input-border-color-light: #cfd7df;
    --input-focus-border-color-light: #0761d4;
    --primary-color-light: #0761d4;
    --primary-color-light-rgb: 7, 97, 212;
    --primary-hover-color-light: #054da0;
    --header-bg-light: #ffffff;
    --header-text-color-light: var(--primary-color-light);
    --header-shadow-light: 0 1px 3px rgba(0,0,0,0.07);
    --icon-color-light: #525860;
    --modal-overlay-color-light: rgba(20, 22, 25, 0.55);
    --danger-color-light: #d73a49;
    --year-title-bg-light: transparent;
    --year-title-border-light: var(--primary-color-light);
    --category-title-gallery-color-light: var(--text-color-light);
    --button-text-color-light: #ffffff;
    --link-color-light: var(--primary-color-light);
    --select-arrow-fill-light: %23525860;
    --detail-preview-bg-light: #f0f2f5;
    --detail-meta-label-light: #6a737d;


    /* Dark Theme Variables */
    --bg-color-dark: #0a0c10;
    --text-color-dark: #d0d7e1;
    --text-secondary-dark: #848d97;
    --card-bg-color-dark: #12161c;
    --border-color-dark: #2a2e34;
    --input-bg-color-dark: #0a0c10;
    --input-border-color-dark: #2a2e34;
    --input-focus-border-color-dark: #539bf5;
    --primary-color-dark: #539bf5;
    --primary-color-dark-rgb: 83, 155, 245;
    --primary-hover-color-dark: #70aeff;
    --header-bg-dark: #12161c;
    --header-text-color-dark: var(--primary-color-dark);
    --header-shadow-dark: 0 2px 8px rgba(0,0,0,0.35);
    --icon-color-dark: #848d97;
    --modal-overlay-color-dark: rgba(3, 4, 5, 0.75);
    --danger-color-dark: #f85149;
    --year-title-bg-dark: transparent;
    --year-title-border-dark: var(--primary-color-dark);
    --category-title-gallery-color-dark: var(--text-color-dark);
    --button-text-color-dark: #0a0c10;
    --link-color-dark: var(--primary-color-dark);
    --select-arrow-fill-dark: %23848d97;
    --detail-preview-bg-dark: #030405;
    --detail-meta-label-dark: #768390;


    /* Default theme variables (switched by body class) */
    --bg-color: var(--bg-color-light);
    --text-color: var(--text-color-light);
    --text-secondary: var(--text-secondary-light);
    --card-bg-color: var(--card-bg-color-light);
    --border-color: var(--border-color-light);
    --input-bg-color: var(--input-bg-color-light);
    --input-border-color: var(--input-border-color-light);
    --input-focus-border-color: var(--input-focus-border-color-light);
    --primary-color: var(--primary-color-light);
    --primary-color-rgb: var(--primary-color-light-rgb);
    --primary-hover-color: var(--primary-hover-color-light);
    --header-bg: var(--header-bg-light);
    --header-text-color: var(--header-text-color-light);
    --header-shadow: var(--header-shadow-light);
    --icon-color: var(--icon-color-light);
    --modal-overlay-color: var(--modal-overlay-color-light);
    --danger-color: var(--danger-color-light);
    --year-title-border: var(--year-title-border-light);
    --category-title-gallery-color: var(--category-title-gallery-color-light);
    --button-text-color: var(--button-text-color-light);
    --link-color: var(--link-color-light);
    --select-arrow-fill: var(--select-arrow-fill-light);
    --detail-preview-bg: var(--detail-preview-bg-light);
    --detail-meta-label: var(--detail-meta-label-light);
}

body.dark-mode {
    --bg-color: var(--bg-color-dark);
    --text-color: var(--text-color-dark);
    --text-secondary: var(--text-secondary-dark);
    --card-bg-color: var(--card-bg-color-dark);
    --border-color: var(--border-color-dark);
    --input-bg-color: var(--input-bg-color-dark);
    --input-border-color: var(--input-border-color-dark);
    --input-focus-border-color: var(--input-focus-border-color-dark);
    --primary-color: var(--primary-color-dark);
    --primary-color-rgb: var(--primary-color-dark-rgb);
    --primary-hover-color: var(--primary-hover-color-dark);
    --header-bg: var(--header-bg-dark);
    --header-text-color: var(--header-text-color-dark);
    --header-shadow: var(--header-shadow-dark);
    --icon-color: var(--icon-color-dark);
    --modal-overlay-color: var(--modal-overlay-color-dark);
    --danger-color: var(--danger-color-dark);
    --year-title-border: var(--year-title-border-dark);
    --category-title-gallery-color: var(--category-title-gallery-color-dark);
    --button-text-color: var(--button-text-color-dark);
    --link-color: var(--link-color-dark);
    --select-arrow-fill: var(--select-arrow-fill-dark);
    --detail-preview-bg: var(--detail-preview-bg-dark);
    --detail-meta-label: var(--detail-meta-label-dark);
}

/* Global Styles */
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: var(--font-family); margin: 0; background-color: var(--bg-color);
    color: var(--text-color); transition: background-color 0.25s ease-in-out, color 0.25s ease-in-out;
    line-height: 1.6; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    font-size: 16px;
}

a { color: var(--link-color); text-decoration: none; transition: color 0.2s var(--ease-out-cubic); }
a:hover { text-decoration: underline; color: var(--primary-hover-color); }

/* Screen reader only class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}


/* Buttons general */
.button {
    padding: 10px 20px; border-radius: var(--border-radius-md);
    font-size: 0.95em; font-weight: 500; text-align: center;
    cursor: pointer; border: 1px solid transparent;
    transition: background-color 0.2s var(--ease-out-cubic), transform 0.15s var(--ease-out-cubic), box-shadow 0.2s var(--ease-out-cubic), border-color 0.2s;
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    text-decoration: none !important;
}
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.button:active { transform: translateY(0px) scale(0.98); box-shadow: none; }
.button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(var(--primary-color-rgb), 0.2);
}

.button.primary-button { background-color: var(--primary-color); color: var(--button-text-color-light); border-color: var(--primary-color); }
.button.primary-button:hover { background-color: var(--primary-hover-color); border-color: var(--primary-hover-color); }
body.dark-mode .button.primary-button { color: var(--button-text-color-dark); }

.button.secondary-button { background-color: transparent; color: var(--primary-color); border: 1px solid var(--primary-color); }
.button.secondary-button:hover { background-color: rgba(var(--primary-color-rgb), 0.08); border-color: var(--primary-hover-color); color: var(--primary-hover-color); }

.icon-button {
    background: none; border: none; color: var(--icon-color); font-size: 1.2em;
    padding: 8px; border-radius: 50%; cursor: pointer;
    transition: background-color 0.2s var(--ease-out-cubic), color 0.2s var(--ease-out-cubic), transform 0.15s ease-out;
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px;
}
.icon-button:hover { background-color: rgba(var(--primary-color-rgb), 0.1); color: var(--primary-color); transform: scale(1.1); }
.icon-button:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 1px;
    background-color: rgba(var(--primary-color-rgb), 0.05);
}

#theme-toggle-user {
    position: fixed; top: 15px; right: 15px; background-color: var(--card-bg-color); border: 1px solid var(--border-color);
    border-radius: 50%; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    cursor: pointer; box-shadow: var(--shadow-md); z-index: 1005; transition: all 0.25s var(--ease-out-cubic);
}
#theme-toggle-user:hover { transform: translateY(-2px) scale(1.05); box-shadow: var(--shadow-lg); }
#theme-toggle-user svg { stroke: var(--text-color); width:18px; height:18px; }

/* Page Header */
#page-header {
    background: var(--header-bg); color: var(--header-text-color); padding: 12px 25px;
    text-align: center; box-shadow: var(--header-shadow); position: sticky; top: 0; z-index: 1000;
    display: flex; justify-content: space-between; align-items: center;
    min-height: 60px; border-bottom: 1px solid var(--border-color);
}
#page-header h1 { margin: 0; font-size: 1.6em; font-weight: 600; letter-spacing: -0.5px; }
.header-controls {
    margin-left: auto; padding-left: 15px;
    margin-right: 60px; /* Space for fixed theme toggle on desktop */
}
.header-controls .header-button {
    background-color: var(--primary-color); color: var(--button-text-color-light);
    border: none; padding: 8px 16px; border-radius: var(--border-radius-md); cursor: pointer;
    font-size: 0.9em; font-weight: 500; transition: background-color 0.2s var(--ease-out-cubic);
}
.header-controls .header-button:hover { background-color: var(--primary-hover-color); }
body.dark-mode .header-controls .header-button { color: var(--button-text-color-dark); }

/* Filter Panel */
#filter-panel {
    position: fixed; top: 0; right: -100%;
    width: 320px; max-width:85vw; height: 100%;
    background-color: var(--card-bg-color); box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    padding: 20px; padding-top: 60px;
    z-index: 1003; transition: right 0.35s var(--ease-out-cubic);
    overflow-y: auto; border-left: 1px solid var(--border-color);
    display: flex; flex-direction: column;
}
#filter-panel.filter-panel-open { right: 0; }
#filter-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--modal-overlay-color); backdrop-filter: blur(3px);
    z-index: 1002; display: none; animation: fadeInOverlay 0.35s var(--ease-out-cubic);
}
@keyframes fadeInOverlay { from { opacity: 0; } to { opacity: 1; } }
#filter-panel h3 { margin-top: 0; margin-bottom: 25px; color: var(--primary-color); font-size: 1.5em; text-align: center; font-weight:600; }
#filter-panel h3 i { margin-right: 10px; }
#close-filter-panel-btn { position: absolute; top: 15px; right: 15px; }
.filter-group { margin-bottom: 20px; }
.filter-group label { display: block; font-size: 0.85em; color: var(--text-secondary); margin-bottom: 6px; font-weight: 500; }
.filter-group select, .filter-group input[type="date"], .filter-group input[type="text"] {
    width: 100%; padding: 10px 14px; border: 1px solid var(--input-border-color);
    border-radius: var(--border-radius-md); background-color: var(--input-bg-color); color: var(--text-color);
    font-size: 0.95em; box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.filter-group select {
    appearance: none; -webkit-appearance: none; -moz-appearance: none;
    background-repeat: no-repeat; background-position: right 14px center; background-size: 14px; padding-right: 38px !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='var(--select-arrow-fill)' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
.filter-group input[type="date"]::-webkit-calendar-picker-indicator { opacity: 0.7; cursor: pointer; transition: opacity 0.2s; }
.filter-group input[type="date"]::-webkit-calendar-picker-indicator:hover { opacity: 1; }
body.dark-mode .filter-group input[type="date"]::-webkit-calendar-picker-indicator { filter: invert(0.8) brightness(0.9); }
.filter-group select:focus, .filter-group input[type="date"]:focus, .filter-group input[type="text"]:focus {
    outline: none; border-color: var(--input-focus-border-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.2);
}
.filter-actions { margin-top: auto; padding-top: 20px; border-top: 1px solid var(--border-color); display: flex; flex-direction: column; gap: 10px; }

/* Main Content Area */
#main-content-area { max-width: 1360px; margin: 25px auto; padding: 0 20px 40px; }
.controls-container { margin-bottom: 30px; padding: 0; }
.search-sort-wrapper {
    display: flex; justify-content: space-between; align-items: center; gap: 15px;
    padding: 15px 20px; background-color: var(--card-bg-color); border-radius: var(--border-radius-lg); box-shadow: var(--shadow-md);
    flex-wrap: wrap; border: 1px solid var(--border-color);
}
.search-bar-container { position: relative; display: flex; align-items: center; flex-grow: 1; min-width: 250px; max-width: 500px; }
.search-icon { position: absolute; left: 15px; color: var(--text-secondary); font-size: 0.9em; pointer-events: none; }
#search-bar {
    width: 100%; padding: 12px 18px 12px 45px; border: 1px solid var(--input-border-color);
    border-radius: var(--border-radius-md); background-color: var(--input-bg-color); color: var(--text-color);
    font-size: 0.95em; transition: border-color 0.2s, box-shadow 0.2s;
}
#search-bar:focus { outline: none; border-color: var(--input-focus-border-color); box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.2); }
.sort-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap;}
.sort-controls label { font-size: 0.9em; color: var(--text-secondary); font-weight: 500; }
.sort-controls label i { margin-right: 5px; }
#sort-by-select {
    padding: 10px 14px; border: 1px solid var(--input-border-color); border-radius: var(--border-radius-md);
    background-color: var(--input-bg-color); color: var(--text-color); font-size: 0.95em;
    min-width: 200px; appearance: none; -webkit-appearance: none; -moz-appearance: none;
    background-repeat: no-repeat; background-position: right 14px center; background-size: 14px; padding-right: 38px !important;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='var(--select-arrow-fill)' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
}
#sort-by-select:focus {
    outline: none; border-color: var(--input-focus-border-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.2);
}

/* Year and Category Grouping */
.year-group { margin-bottom: 40px; }
.year-title {
    font-size: 1.8em; font-weight: 700; color: var(--primary-color);
    margin: 0 0 25px 0; padding-bottom: 12px;
    border-bottom: 2px solid var(--year-title-border);
    text-align: left; position: relative;
}
.year-title::after {
    content: ''; position: absolute; left: 0; bottom: -2px; width: 70px; height: 2px; background-color: var(--primary-hover-color);
    transition: width 0.3s var(--ease-out-cubic);
}
.year-title:hover::after { width: 100px; }
.category-group { margin-bottom: 30px; }
.category-title-gallery {
    font-size: 1.3em; font-weight: 600; color: var(--category-title-gallery-color);
    margin: 0 0 20px 0; padding-bottom: 8px; border-bottom: 1px solid var(--border-color);
}
.certificates-grid {
    display: grid; gap: 20px;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
}
@media (min-width: 480px) { .certificates-grid { gap: 18px; } }
@media (min-width: 768px) { .certificates-grid { gap: 20px; } }
@media (min-width: 1200px) { .certificates-grid { gap: 22px; } }

/* Certificate Card Styling */
.certificate-card {
    background-color: var(--card-bg-color); border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden; transition: transform 0.25s var(--ease-out-cubic), box-shadow 0.25s var(--ease-out-cubic), border-color 0.25s;
    cursor: pointer; display: flex; flex-direction: column;
}
.certificate-card:hover {
    transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--primary-color);
}
.certificate-card:focus-visible {
    transform: translateY(-5px); box-shadow: var(--shadow-lg);
    outline: 2px solid var(--primary-color); outline-offset: 2px; border-color: var(--primary-color);
}
.card-image-area {
    width: 100%; aspect-ratio: 16 / 10;
    background-color: var(--detail-preview-bg);
    display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative;
    border-bottom: 1px solid var(--border-color);
}
.card-image-area img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.3s var(--ease-out-cubic), filter 0.3s var(--ease-out-cubic);
}
.certificate-card:hover .card-image-area img { transform: scale(1.05); filter: brightness(1.03); }
.card-image-area .file-type-icon { font-size: 3em; color: var(--text-secondary); opacity: 0.6; }
.card-image-area .error-text { font-size: 0.8em; color: var(--text-secondary); position: absolute; bottom: 5px; left: 5px; background-color: rgba(var(--card-bg-color-rgb, 255,255,255),0.85); padding: 2px 4px; border-radius: var(--border-radius-sm);}
body.light-mode { --card-bg-color-rgb: 255,255,255; }
body.dark-mode { --card-bg-color-rgb: 22,27,34; }
.card-content { padding: 15px; flex-grow: 1; display: flex; flex-direction: column; }
.card-content h4 {
    margin: 0 0 8px 0; font-size: 1.05em; font-weight: 600; color: var(--text-color); line-height: 1.35;
    display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; min-height: calc(1.35em * 2);
}
.card-meta { font-size: 0.8em; color: var(--text-secondary); margin-bottom: 5px; display: flex; align-items: center;}
.card-meta i { margin-right: 6px; width: 12px; text-align: center; color: var(--icon-color); }
.card-meta-category { margin-bottom: 10px; font-weight: 500; }
.card-actions { margin-top: auto; padding-top: 12px; border-top: 1px solid var(--border-color); text-align: right; }
.view-details-btn { font-size: 0.85em; color: var(--primary-color); text-decoration: none; font-weight: 500; display: inline-flex; align-items: center; }
.view-details-btn:hover { color: var(--primary-hover-color); }
.view-details-btn i { margin-left: 5px; transition: transform 0.2s var(--ease-out-cubic); }
.view-details-btn:hover i { transform: translateX(3px); }

/* Certificate Detail View (Preview Section) */
#certificate-detail-view {
    background-color: var(--bg-color);
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 1010; overflow-y: auto; padding: 0;
    animation: fadeInDetailView 0.3s ease-out;
}
@keyframes fadeInDetailView { from { opacity: 0; transform: scale(0.98); } to { opacity: 1; transform: scale(1); } }
@keyframes contentSlideUpFadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

#detail-view-header {
    background: var(--header-bg); color: var(--header-text-color);
    padding: 10px 15px; box-shadow: var(--shadow-md);
    position: sticky; top: 0; z-index: 1011;
    display: flex; align-items: center; gap: 15px; min-height: 56px;
    border-bottom: 1px solid var(--border-color);
}
#detail-view-header #back-to-gallery-btn { font-size: 1em; width: 36px; height: 36px; }
#detail-cert-name-header {
    margin: 0; font-size: 1.25em; font-weight: 600;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.detail-view-content-wrapper {
    max-width: 1200px; margin: 25px auto; padding: 0 20px 40px;
    display: flex; gap: 30px;
}
.detail-view-left-column, .detail-view-right-column {
    animation: contentSlideUpFadeIn 0.4s var(--ease-out-cubic) 0.1s backwards;
}

.detail-view-left-column {
    flex: 6; display: flex; flex-direction: column; align-items: center;
    min-width: 0;
}
#detail-cert-image-container {
    width: 100%; background-color: var(--detail-preview-bg);
    padding: 20px;
    border-radius: var(--border-radius-lg); border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md), inset 0 0 20px rgba(0,0,0,0.04);
    display: flex; justify-content: center; align-items: center;
    min-height: 300px;
}
#detail-cert-image-container img {
    display: block; max-width: 100%; max-height: calc(100vh - 160px);
    height: auto; object-fit: contain; border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-xl);
    background-color: #fff; /* White bg for transparent PNGs */
}
.loader-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 30px; color: var(--text-secondary); font-size: 1em;
    min-height: 200px;
}
.spinner {
    border: 3px solid rgba(var(--primary-color-rgb), 0.2); border-left-color: var(--primary-color);
    border-radius: 50%; width: 30px; height: 30px; animation: spin 0.8s linear infinite; margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

#detail-cert-pdf-placeholder {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 30px; text-align: center; color: var(--text-secondary);
    background-color: var(--detail-preview-bg); border-radius: var(--border-radius-lg);
    border: 2px dashed var(--border-color);
    min-height: 250px; width: 100%;
    box-shadow: inset 0 0 20px rgba(0,0,0,0.04);
}
.pdf-icon-massive { font-size: 4.5em; color: var(--primary-color); margin-bottom: 18px; opacity: 0.8; }
#detail-pdf-filename-placeholder { font-weight: 500; margin-bottom: 8px; font-size: 1.05em; color: var(--text-color); }
.pdf-view-instruction-detail { font-size: 0.9em; }

.detail-view-right-column {
    flex: 4; background-color: var(--card-bg-color);
    padding: 25px; border-radius: var(--border-radius-lg); border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md); height: fit-content;
}
.detail-view-right-column h2 {
    margin-top: 0; margin-bottom: 20px; font-size: 1.5em;
    color: var(--text-color);
    border-bottom: 2px solid var(--primary-color); padding-bottom: 10px;
}
.detail-meta-grid { display: grid; gap: 14px 18px; font-size: 0.95em; }
.detail-meta-item { margin: 0; line-height: 1.55; display: flex; flex-direction: column; }
.detail-meta-item i { margin-right: 8px; color: var(--primary-color); width: 16px; text-align: left; margin-top: 3px; }
.detail-meta-item strong {
    color: var(--detail-meta-label);
    font-weight: 500;
    font-size: 0.85em;
    margin-bottom: 3px;
    display: flex; align-items: center;
}
.detail-meta-item span {
    color: var(--text-color);
    font-weight: 500;
    word-break: break-word;
}
.detail-meta-item.full-width { grid-column: 1 / -1; }
.description-text {
    margin-top: 8px; line-height: 1.65; color: var(--text-color);
    white-space: pre-wrap; word-break: break-word; font-size: 0.95em;
    background-color: var(--detail-preview-bg);
    padding: 12px 15px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}
.detail-actions { margin-top: 25px; display: flex; flex-direction: column; gap: 12px; }
.detail-action-button { padding: 12px 20px; font-size: 1em; }

/* Download Modal */
.download-modal { z-index: 1020; }
.download-modal-content {
    background-color: var(--card-bg-color);
    border-radius: var(--border-radius-lg);
    padding: 25px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    position: relative;
}
.download-format-buttons {
    display: flex;
    gap: 16px;
    margin: 18px 0 10px 0;
    flex-wrap: wrap;
}
.format-btn {
    background-color: var(--primary-color);
    color: var(--button-text-color-light);
    border: none;
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: background-color 0.2s var(--ease-out-cubic);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.format-btn:hover { background-color: var(--primary-hover-color); }

/* No Results Message */
#no-results-message {
    color: var(--text-secondary); font-size: 1.1em; padding: 30px 20px; text-align: center;
    border: 1px solid var(--border-color); border-radius: var(--border-radius-lg); margin-top: 30px;
    background-color: rgba(var(--card-bg-color-rgb, 255,255,255),0.5);
}
#no-results-message i { color: var(--primary-color); display: block; font-size: 2.2em; margin-bottom: 12px; }

/* Responsive Adjustments */
@media (max-width: 992px) { /* Tablet and smaller desktop */
    .detail-view-content-wrapper { flex-direction: column; gap: 20px; }
    #detail-cert-image-container img { max-height: 55vh; }
}

@media (max-width: 768px) { /* Mobile */
    body { font-size: 15px; }
    #page-header {
        flex-wrap: nowrap; /* Prevent wrapping on mobile header */
        justify-content: space-between;
        padding: 10px 15px;
        min-height: 56px;
    }
    #page-header h1 {
        font-size: 1.2em; text-align: left;
        flex-grow: 1; margin-right: 10px;
        overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
        order: 1;
    }
    .header-controls { /* Filter button container */
        order: 2;
        margin-left: 0; /* Reset margin */
        margin-right: 0; /* Reset margin */
        padding-left: 0; /* Reset padding */
    }
     #theme-toggle-user { /* Theme toggle button */
        position:relative; /* Keep in flow */
        top: auto; right: auto;
        width: 36px; height: 36px;
        order: 3;
        margin-left: 10px; /* Space from filter button */
    }
    #theme-toggle-user svg { width:16px; height:16px; }

    .search-sort-wrapper { flex-direction: column; align-items: stretch; gap:15px; padding: 12px; }
    #main-content-area { margin-top: 20px; padding: 0 15px 30px; }
    .filter-panel { width: 88%; max-width:300px; }
    .year-title { font-size: 1.5em; }
    .category-title-gallery { font-size: 1.15em; }

    #detail-view-header { padding: 8px 12px; min-height: 50px; gap: 10px; }
    #detail-cert-name-header { font-size: 1.05em; }
    .detail-view-content-wrapper { margin: 15px auto; padding: 0 10px 30px; gap: 15px; }
    .detail-view-right-column { padding: 15px; }
    .detail-view-right-column h2 { font-size: 1.2em; }
    .detail-meta-grid { grid-template-columns: 1fr; gap: 10px; font-size: 0.9em; }
    .detail-meta-item strong { font-size: 0.8em; }
    .description-text { padding: 10px; font-size: 0.9em; }
}

@media (max-width: 480px) {
    .button { padding: 8px 12px; font-size: 0.85em; }
    .icon-button { width: 36px; height: 36px; }
    #theme-toggle-user { width:34px; height:34px; margin-left: 5px; }
    #theme-toggle-user svg { width:14px; height:14px; }

    #page-header { padding: 8px 10px; }
    #page-header h1 { font-size: 1.1em; }
    .header-controls .header-button { padding: 6px 10px; font-size: 0.85em;}

    .search-bar-container { min-width: unset; }
    #search-bar { padding: 10px 12px 10px 35px; font-size: 0.9em; }
    .search-icon { left: 12px; }
    #sort-by-select { padding: 9px 10px; font-size: 0.9em; padding-right: 30px !important; }

    .card-content { padding: 12px; }
    .card-content h4 { font-size: 0.95em; min-height: calc(1.3em * 2); }
    .card-meta { font-size: 0.75em; }
    .view-details-btn { font-size: 0.8em; }

    .year-title { font-size: 1.3em; margin-bottom: 15px; padding-bottom: 8px; }
    .year-title::after { width: 50px; }
    .category-title-gallery { font-size: 1.05em; margin-bottom: 15px; }
    .certificates-grid { gap: 12px; grid-template-columns: repeat(auto-fill, minmax(100%, 1fr));}
    @media (min-width: 380px) and (max-width: 479px) {
        .certificates-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));}
    }

    #detail-view-content-wrapper { padding: 0 8px 20px; }
    #detail-cert-image-container { padding: 10px; }
    #detail-cert-image-container img { max-height: 40vh; }
    .detail-view-right-column h2 { font-size: 1.1em; }
    .detail-meta-item, .description-text { font-size: 0.85em; }
    .detail-action-button { padding: 8px 15px; font-size: 0.9em; }
    .download-modal-content { padding: 15px; }
    .download-modal-content h4 { font-size: 1.1em; }
    .download-modal-content p { font-size: 0.9em; }
}

/* Custom Styles for Download Options Modal */
#download-options-modal {
    display: none; position: fixed; top: 0; left: 0;
    width: 100%; height: 100%; background-color: rgba(10, 12, 16, 0.9);
    z-index: 1050; justify-content: center; align-items: center;
    animation: fadeInModal 0.3s ease-out;
}
@keyframes fadeInModal {
    from { opacity: 0; }
    to { opacity: 1; }
}
.download-options-content {
    background-color: var(--card-bg-color); border-radius: var(--border-radius-lg);
    padding: 25px; width: 90%; max-width: 500px;
    box-shadow: var(--shadow-lg);
    position: relative;
}
.download-options-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 20px;
}
.download-options-header h4 {
    margin: 0; font-size: 1.2em; font-weight: 600;
    color: var(--text-color);
}
.close-download-options {
    position: absolute; top: 15px; right: 15px;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease-out;
}
.close-download-options:hover { transform: scale(1.1); }
.download-option-button {
    background-color: var(--primary-color); color: var(--button-text-color-light);
    border: none; padding: 12px 20px; border-radius: var(--border-radius-md);
    cursor: pointer; font-size: 1em; font-weight: 500;
    transition: background-color 0.2s var(--ease-out-cubic);
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px;
}
.download-option-button:hover { background-color: var(--primary-hover-color); }

/* End of Custom Styles */

/* JavaScript-Added Styles */
#close-download-modal-btn {
    position: absolute; top: 15px; right: 15px;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease-out;
}
#close-download-modal-btn:hover { transform: scale(1.1); }