/* ── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --color-bg:        #f8f9fa;
    --color-surface:   #ffffff;
    --color-border:    #dee2e6;
    --color-primary:   #4f46e5;
    --color-primary-h: #4338ca;
    --color-danger:    #dc2626;
    --color-danger-h:  #b91c1c;
    --color-success:   #16a34a;
    --color-text:      #111827;
    --color-muted:     #6b7280;
    --radius:          8px;
    --shadow:          0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

html { font-size: 16px; }
body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.25rem;
    flex: 1;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: .875rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.site-header .logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.site-header nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
    text-align: center;
    font-size: .8rem;
    color: var(--color-muted);
    padding: 1.5rem;
    border-top: 1px solid var(--color-border);
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1rem;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    font-size: .9rem;
    font-weight: 500;
    transition: background .15s, opacity .15s;
    text-decoration: none;
}
.btn:hover { text-decoration: none; }

.btn-primary  { background: var(--color-primary);  color: #fff; }
.btn-primary:hover { background: var(--color-primary-h); }

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

.btn-ghost    { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn-ghost:hover { background: #ede9fe; }

.btn-sm { padding: .35rem .75rem; font-size: .82rem; }

/* inline form button that looks like a link */
.inline-form { display: inline; }
.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    font-size: inherit;
    padding: 0;
}
.btn-link:hover { text-decoration: underline; }

/* ── Alerts ──────────────────────────────────────────────────────────────── */
.alert {
    padding: .75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1.25rem;
    font-size: .9rem;
}
.alert-success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ── Auth forms ──────────────────────────────────────────────────────────── */
.auth-wrap {
    display: flex;
    justify-content: center;
    padding-top: 3rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 2rem;
}

.auth-card h1 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: .875rem;
    font-weight: 500;
    margin-bottom: .35rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: .5rem .75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: .95rem;
    background: var(--color-bg);
    transition: border-color .15s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}

.form-footer {
    margin-top: 1.25rem;
    text-align: center;
    font-size: .875rem;
    color: var(--color-muted);
}

.btn-block { width: 100%; justify-content: center; padding: .65rem; }

/* ── Page heading row ────────────────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
    gap: .75rem;
}

.page-header h1 { font-size: 1.5rem; }

/* ── Image grid ──────────────────────────────────────────────────────────── */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.25rem;
}

.image-card {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    transition: box-shadow .15s;
}
.image-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,.12); }

.image-card a { text-decoration: none; color: inherit; }

.image-thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
    background: #e5e7eb;
}

.image-thumb-placeholder {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--color-muted);
}

.image-meta {
    padding: .6rem .75rem;
    font-size: .8rem;
    color: var(--color-muted);
    border-top: 1px solid var(--color-border);
}

.image-meta .filename {
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: .15rem .55rem;
    border-radius: 99px;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .02em;
}
.badge-public  { background: #dcfce7; color: #15803d; }
.badge-private { background: #fee2e2; color: #b91c1c; }

/* ── Empty state ─────────────────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-muted);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state p { margin-bottom: 1.25rem; }

/* ── Image detail page ───────────────────────────────────────────────────── */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 700px) {
    .detail-grid { grid-template-columns: 1fr; }
}

.detail-image {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: block;
    background: #e5e7eb;
}

.detail-panel { display: flex; flex-direction: column; gap: 1.25rem; }

.detail-panel .card { padding: 1.25rem; }

.detail-panel h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: .75rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
    font-size: .75rem;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-size: .875rem;
    padding: .3rem 0;
    border-bottom: 1px solid var(--color-border);
}
.meta-row:last-child { border-bottom: none; }
.meta-row span:first-child { color: var(--color-muted); }

/* ── Upload form ─────────────────────────────────────────────────────────── */
.upload-card {
    max-width: 540px;
    padding: 2rem;
}

.upload-card h1 { font-size: 1.4rem; margin-bottom: 1.5rem; }

.file-drop {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    color: var(--color-muted);
    cursor: pointer;
    transition: border-color .15s, background .15s;
    margin-bottom: 1rem;
}
.file-drop:hover { border-color: var(--color-primary); background: #f5f3ff; }
.file-drop input[type="file"] {
    position: absolute;
    width: 1px; height: 1px;
    opacity: 0; overflow: hidden;
}
.file-drop .drop-icon { font-size: 2rem; display: block; margin-bottom: .5rem; }

.visibility-toggle {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}
.visibility-toggle label {
    display: flex;
    align-items: center;
    gap: .4rem;
    cursor: pointer;
    font-size: .9rem;
}

/* ── Danger zone ─────────────────────────────────────────────────────────── */
.danger-zone {
    border: 1px solid #fecaca;
    border-radius: var(--radius);
    padding: 1.25rem;
    background: #fff5f5;
}
.danger-zone h2 { color: var(--color-danger); margin-bottom: .5rem; font-size: .9rem; }
.danger-zone p { font-size: .85rem; color: var(--color-muted); margin-bottom: .75rem; }

/* ── Misc ────────────────────────────────────────────────────────────────── */
.text-muted { color: var(--color-muted); font-size: .875rem; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.gap-2 { gap: .5rem; }
.flex { display: flex; }
.items-center { align-items: center; }

/* ── Profile page ────────────────────────────────────────────────────────── */
.profile-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 680px) {
    .profile-grid { grid-template-columns: 1fr; }
}

.profile-avatar-card {
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .75rem;
    text-align: center;
}

.avatar-wrap {
    margin-bottom: .5rem;
}

.avatar-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-border);
    box-shadow: var(--shadow);
    display: block;
}

.avatar-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--color-border);
}

.profile-email {
    font-size: 1rem;
    font-weight: 600;
    word-break: break-all;
}

.profile-since {
    font-size: .82rem;
}

.profile-stats {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    padding: .75rem 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    margin: .25rem 0;
}

.stat { display: flex; flex-direction: column; align-items: center; gap: .1rem; }
.stat-value { font-size: 1.4rem; font-weight: 700; }
.stat-label { font-size: .75rem; color: var(--color-muted); text-transform: uppercase; letter-spacing: .04em; }

.avatar-form { width: 100%; }