/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; }

/* ── Design tokens ── */
:root {
    --bg:           #09090f;
    --surface:      #111118;
    --surface-2:    #1a1a2a;
    --border:       rgba(255,255,255,0.07);
    --accent-1:     #6366f1;
    --accent-2:     #a855f7;
    --accent-g:     linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --text:         #e2e8f0;
    --text-muted:   #737c8e;
    --danger:       #ef4444;
    --radius-xl:    20px;
    --radius-lg:    14px;
    --radius-md:    10px;
    --shadow-sm:    0 2px 14px rgba(0,0,0,0.4);
    --shadow-md:    0 6px 32px rgba(0,0,0,0.6);
    --glow:         0 0 52px rgba(99,102,241,0.22);
}

/* ── Base ── */
body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg);
    background-image: radial-gradient(ellipse 90% 45% at 50% 0%,
        rgba(99,102,241,0.1) 0%, transparent 65%);
    color: var(--text);
    min-height: 100vh;
}

/* ── Layout ── */
.page {
    max-width: 1120px;
    margin: 0 auto;
    padding: 3rem 1.5rem 5rem;
}

/* ── Header ── */
.site-header { margin-bottom: 2.5rem; }

.site-title {
    margin: 0 0 0.3rem;
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    background: var(--accent-g);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.site-subtitle {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.btn-logout {
    flex-shrink: 0;
    margin-top: 0.5rem;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.35rem 0.9rem;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    white-space: nowrap;
}

.btn-logout:hover {
    color: var(--text);
    border-color: rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.04);
}

/* ── Upload card ── */
.upload-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    margin-bottom: 2.5rem;
    box-shadow: var(--shadow-md);
}

.drop-zone {
    border: 2px dashed rgba(99,102,241,0.35);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
    text-align: center;
    color: var(--text-muted);
    cursor: pointer;
    margin-bottom: 1rem;
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.drop-zone:hover, .drop-zone.dragging {
    border-color: var(--accent-1);
    background: rgba(99,102,241,0.06);
    color: var(--text);
}

.drop-zone.dragging { border-color: var(--accent-2); }

.drop-icon {
    width: 46px;
    height: 46px;
    stroke: var(--accent-1);
    opacity: 0.65;
    margin-bottom: 0.25rem;
    transition: opacity 0.2s;
}

.drop-zone:hover .drop-icon,
.drop-zone.dragging .drop-icon { opacity: 1; }

.drop-text  { font-size: 0.95rem; font-weight: 500; }
.drop-hint  { font-size: 0.8rem;  opacity: 0.55; }

#file-input { display: none; }

.upload-actions { display: none; }

.btn-primary {
    background: var(--accent-g);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.65rem 1.9rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: opacity 0.2s, transform 0.15s, box-shadow 0.2s;
    box-shadow: 0 4px 20px rgba(99,102,241,0.38);
}

.btn-primary:hover {
    opacity: 0.87;
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(99,102,241,0.52);
}

.btn-primary:active { transform: translateY(0); }

#upload-form.htmx-request .btn-primary {
    opacity: 0.5;
    cursor: wait;
    transform: none;
}

/* ── Gallery section header ── */
.gallery-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.1rem;
}

.gallery-title {
    margin: 0;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ── Photo grid ── */
.photo-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.1rem;
}

/* ── Photo card ── */
.photo-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform 0.28s cubic-bezier(.22,.68,0,1.3),
                box-shadow 0.28s;
}

.photo-item:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: var(--glow), var(--shadow-md);
}

.thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    cursor: pointer;
    transition: transform 0.45s ease;
}

.photo-item:hover .thumbnail { transform: scale(1.08); }

/* Description gradient overlay — always visible */
.photo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(4,4,14,0.88) 0%,
        rgba(4,4,14,0.52) 36%,
        rgba(4,4,14,0.08) 62%,
        transparent       100%
    );
    display: flex;
    align-items: flex-end;
    padding: 0.85rem;
    pointer-events: none;
    transition: background 0.3s ease;
}

/* Deepen gradient on hover for added drama */
.photo-item:hover .photo-overlay {
    background: linear-gradient(
        to top,
        rgba(4,4,14,0.97) 0%,
        rgba(4,4,14,0.62) 42%,
        rgba(4,4,14,0.12) 68%,
        transparent       100%
    );
}

.photo-desc {
    color: rgba(240,244,248,0.82);
    font-size: 0.76rem;
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.photo-item:hover .photo-desc { color: #f0f4f8; }

/* Delete — top-right corner, appears on hover */
.delete-form {
    position: absolute;
    top: 0.55rem;
    right: 0.55rem;
    margin: 0;
    z-index: 10;
}

.delete-btn {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(8,8,20,0.65);
    color: rgba(255,255,255,0.65);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    transition: background 0.2s, color 0.2s, opacity 0.2s, border-color 0.2s;
}

.photo-item:hover .delete-btn { opacity: 1; }

.delete-btn:hover {
    background: var(--danger);
    color: #fff;
    border-color: transparent;
}

/* ── Full-page drag overlay ── */
.page-drag-overlay {
    position: fixed;
    inset: 0;
    background: rgba(99,102,241,0.14);
    border: 3px dashed var(--accent-1);
    border-radius: var(--radius-xl);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 0.75rem;
    color: #c7d2fe;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    pointer-events: none;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.page-drag-overlay.active { display: flex; }

.page-drag-overlay svg {
    width: 72px;
    height: 72px;
    stroke: var(--accent-1);
    opacity: 0.8;
}

/* ── Empty state ── */
.empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 5rem 2rem 3rem;
    gap: 0.6rem;
    color: var(--text-muted);
}

.empty-icon {
    width: 54px;
    height: 54px;
    stroke: var(--text-muted);
    opacity: 0.28;
    margin-bottom: 0.25rem;
}

.empty-state p { margin: 0; font-size: 0.95rem; }
.empty-state .empty-hint { font-size: 0.82rem; opacity: 0.55; }

/* ── Modal ── */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(4,4,14,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 100;
    padding: 1.5rem;
}

.modal.open { display: flex; }

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(10,10,22,0.72);
    color: rgba(255,255,255,0.75);
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    z-index: 101;
}

.modal-close:hover {
    background: var(--danger);
    color: #fff;
    border-color: transparent;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1rem;
    max-width: min(90vw, 1000px);
    max-height: 92vh;
    overflow: hidden;
    box-shadow: 0 32px 90px rgba(0,0,0,0.8), var(--glow);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    animation: modal-pop 0.22s cubic-bezier(.22,.68,0,1.2);
}

@keyframes modal-pop {
    from { opacity: 0; transform: scale(0.94) translateY(14px); }
    to   { opacity: 1; transform: scale(1)    translateY(0);    }
}

.modal img {
    max-width: 100%;
    max-height: 78vh;
    border-radius: var(--radius-md);
    display: block;
    object-fit: contain;
}

.modal-caption {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0;
    padding: 0 0.25rem 0.25rem;
    line-height: 1.55;
}

/* ── Modal prev / next navigation ── */
.modal-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(10,10,22,0.7);
    color: rgba(255,255,255,0.8);
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
    z-index: 102;
    user-select: none;
}

#modal-prev { left:  1.25rem; }
#modal-next { right: 1.25rem; }

.modal-nav:hover {
    background: rgba(99,102,241,0.45);
    border-color: var(--accent-1);
    transform: translateY(-50%) scale(1.1);
}

/* ── Photo count badge ── */
.photo-count-badge {
    margin-left: 0.65rem;
    background: rgba(99,102,241,0.12);
    color: var(--accent-1);
    border: 1px solid rgba(99,102,241,0.22);
    border-radius: 999px;
    padding: 0.08rem 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    vertical-align: middle;
    transition: background 0.3s;
}

/* ── Card entry animation ── */
@keyframes card-in {
    from { opacity: 0; transform: translateY(22px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

/* ── Skeleton loading card ── */
@keyframes skeleton-shimmer {
    from { transform: translateX(-120%); }
    to   { transform: translateX(120%);  }
}

.skeleton-card {
    background: var(--surface-2);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.skeleton-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(99,102,241,0.12) 50%,
        transparent 100%
    );
    animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

/* ── Toast notifications ── */
#toast-container {
    position: fixed;
    bottom: 1.75rem;
    right: 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.6rem;
    z-index: 500;
    pointer-events: none;
}

.toast {
    background: rgba(17,17,24,0.92);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.7rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    box-shadow: var(--shadow-md);
    pointer-events: auto;
    max-width: 320px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    transform: translateX(20px) scale(0.97);
    transition: opacity 0.24s ease, transform 0.24s cubic-bezier(.22,.68,0,1.2);
}

.toast.visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.toast-success { border-color: rgba(34,197,94,0.35); }
.toast-error   { border-color: rgba(239,68,68,0.35); }
.toast-info    { border-color: rgba(99,102,241,0.35); }

/* Spinner for "in-progress" toasts */
@keyframes spin { to { transform: rotate(360deg); } }

.toast-spinner {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(99,102,241,0.25);
    border-top-color: var(--accent-1);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}