@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600&display=swap');

:root {
    --bg-color: #0f172a;
    --surface-color: rgba(30, 41, 59, 0.75);
    --border-color: rgba(255, 255, 255, 0.1);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --error: #ef4444;
    --success: #10b981;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.12), transparent 30%),
        radial-gradient(circle at 85% 30%, rgba(168, 85, 247, 0.12), transparent 30%);
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    width: 100%;
    padding: 1.5rem 1rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

h1 {
    font-weight: 600;
    font-size: 2.2rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

main {
    width: 100%;
    max-width: 1200px;
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

/* Upload Section */
.upload-section {
    background: var(--surface-color);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 2.5rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.upload-section h2 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
}

#uploadForm {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.input-group {
    display: flex;
    flex-direction: column;
}

input[type="text"] {
    width: 100%;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.file-input-wrapper {
    position: relative;
    width: 100%;
    height: 3.5rem;
    border-radius: 0.75rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px dashed rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-input-wrapper:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-input-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

button[type="submit"] {
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), #4f46e5);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

button[type="submit"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

button[type="submit"]:active {
    transform: translateY(0);
}

button[type="submit"]:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

#uploadStatus {
    margin-top: 1rem;
    font-size: 0.95rem;
    text-align: center;
    min-height: 1.2rem;
}

/* Gallery Section */
.gallery-section {
    width: 100%;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.mag-card {
    background: var(--surface-color);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.mag-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.mag-icon {
    background: rgba(0, 0, 0, 0.4);
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: #f87171;
    position: relative;
}

.mag-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.5));
}

.mag-info {
    padding: 1.25rem;
    background: linear-gradient(to top, rgba(30, 41, 59, 1), rgba(30, 41, 59, 0.6));
}

.mag-title {
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.mag-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.empty-state, .loading-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    background: rgba(0,0,0,0.2);
    border-radius: 1rem;
    border: 1px dashed rgba(255,255,255,0.1);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 100;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    width: 100%;
    max-width: 1100px;
    height: 90vh;
    background: var(--bg-color);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-weight: 500;
    font-size: 1.1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 1rem;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.close-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.1);
}

.iframe-container {
    position: relative;
    width: 100%;
    flex-grow: 1;
    background-color: #f1f5f9; /* Light background for PDF typically */
}

#pdfViewer {
    width: 100%;
    height: 100%;
    border: none;
    position: relative;
    z-index: 2;
}

.iframe-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-color);
    z-index: 1;
}

.download-fallback-btn {
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
    transition: background 0.2s;
}

.download-fallback-btn:hover {
    background: var(--primary-hover);
}

.overlay-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    main { padding: 1.5rem 1rem; gap: 2rem; }
    .upload-section { padding: 1.5rem; }
    .gallery { grid-template-columns: repeat(auto-fill, minmax(100%, 1fr)); }
    .modal { padding: 0; }
    .modal-content { height: 100vh; border-radius: 0; border: none; }
}