@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-0: #06060b; --bg-1: #0e0e16; --bg-2: #161622; --bg-3: #1e1e2e;
    --glass: rgba(22,22,34,0.82); --border: rgba(255,255,255,0.06);
    --text-1: #f0f0f5; --text-2: #8888a0; --text-3: #55556a;
    --accent: #6c5ce7; --accent-l: #a29bfe; --accent-glow: rgba(108,92,231,0.25);
    --green: #00cec9; --red: #ff6b6b; --orange: #fdcb6e;
    --radius: 12px; --radius-sm: 8px;
}

html, body { height: 100%; overflow: hidden; }
body { font-family: 'Inter', system-ui, sans-serif; background: var(--bg-0); color: var(--text-1); display: flex; flex-direction: column; }

/* ── HEADER ── */
.header { display: flex; align-items: center; justify-content: space-between; padding: 10px 20px; background: var(--bg-1); border-bottom: 1px solid var(--border); z-index: 200; flex-shrink: 0; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-icon { width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--accent), var(--accent-l)); display: flex; align-items: center; justify-content: center; font-size: 17px; box-shadow: 0 2px 12px var(--accent-glow); }
.logo-text { font-weight: 600; font-size: 17px; letter-spacing: -0.3px; }
.logo-text span { color: var(--accent-l); }
.header-right { display: flex; align-items: center; gap: 8px; }
.user-badge { display: flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: var(--radius-sm); background: var(--bg-3); font-size: 12px; color: var(--text-2); }
.user-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 6px var(--green); }

/* ── BUTTONS ── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-3); color: var(--text-1); font: 500 13px/1 'Inter', sans-serif; cursor: pointer; transition: all .2s; white-space: nowrap; }
.btn:hover { background: rgba(108,92,231,.12); border-color: var(--accent); transform: translateY(-1px); }
.btn-sm { padding: 6px 10px; font-size: 12px; }
.btn-primary { background: linear-gradient(135deg, var(--accent), #7c6cf0); border-color: transparent; box-shadow: 0 2px 12px var(--accent-glow); }
.btn-primary:hover { background: linear-gradient(135deg, #7c6cf0, #8c7cf5); box-shadow: 0 4px 20px var(--accent-glow); }
.btn-danger { color: var(--red); }
.btn-danger:hover { background: rgba(255,107,107,.1); border-color: var(--red); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--text-2); }
.btn-ghost:hover { color: var(--text-1); background: var(--bg-3); }

/* ── PAGES ── */
.page { display: none; flex: 1; overflow: hidden; }
.page.active { display: flex; }

/* ── LOGIN ── */
.login-page { align-items: center; justify-content: center; background: radial-gradient(ellipse at 50% 30%, rgba(108,92,231,.08), transparent 70%); }
.login-card { width: 380px; max-width: 92vw; padding: 40px 32px; background: var(--bg-2); border: 1px solid var(--border); border-radius: 20px; text-align: center; }
.login-card .logo-icon { width: 52px; height: 52px; font-size: 26px; margin: 0 auto 16px; }
.login-card h1 { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
.login-card p { color: var(--text-2); font-size: 13px; margin-bottom: 28px; }
.form-group { margin-bottom: 14px; text-align: left; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--text-2); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 1px; }
.form-input { width: 100%; padding: 11px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-1); color: var(--text-1); font: 400 14px 'Inter', sans-serif; outline: none; transition: border .2s; }
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.login-btn { width: 100%; margin-top: 8px; padding: 12px; font-size: 14px; justify-content: center; }
.login-error { color: var(--red); font-size: 12px; margin-top: 12px; min-height: 18px; }

/* ── DASHBOARD ── */
.dashboard-page { flex-direction: column; overflow-y: auto; }
.page-header { display: flex; align-items: center; justify-content: space-between; padding: 20px 24px 12px; flex-shrink: 0; }
.page-title { font-size: 20px; font-weight: 600; }
.page-subtitle { color: var(--text-2); font-size: 13px; margin-top: 2px; }
.folder-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; padding: 8px 24px 24px; }
.folder-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: all .25s; position: relative; }
.folder-card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,.4); }
.folder-cover { width: 100%; aspect-ratio: 16/10; background: var(--bg-1); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.folder-cover img { width: 100%; height: 100%; object-fit: cover; }
.folder-cover .empty-icon { font-size: 36px; color: var(--text-3); }
.folder-info { padding: 12px 14px; }
.folder-name { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.folder-meta { display: flex; align-items: center; gap: 8px; margin-top: 4px; font-size: 11px; color: var(--text-2); }
.folder-delete { position: absolute; top: 8px; right: 8px; width: 28px; height: 28px; border-radius: 6px; background: rgba(0,0,0,.6); backdrop-filter: blur(8px); border: none; color: var(--text-2); font-size: 14px; cursor: pointer; display: none; align-items: center; justify-content: center; transition: all .15s; }
.folder-card:hover .folder-delete { display: flex; }
.folder-delete:hover { color: var(--red); background: rgba(255,107,107,.2); }

/* ── NEW FOLDER CARD ── */
.folder-card.new-folder { border-style: dashed; border-color: rgba(108,92,231,.3); }
.folder-card.new-folder:hover { border-color: var(--accent); background: rgba(108,92,231,.05); }
.folder-card.new-folder .folder-cover { background: transparent; flex-direction: column; gap: 8px; }
.folder-card.new-folder .plus-icon { font-size: 32px; color: var(--accent-l); }
.folder-card.new-folder .plus-label { font-size: 13px; color: var(--text-2); }

/* ── FOLDER DETAIL PAGE ── */
.detail-page { flex-direction: column; overflow-y: auto; }
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-2); }
.breadcrumb a { color: var(--accent-l); text-decoration: none; cursor: pointer; }
.breadcrumb a:hover { text-decoration: underline; }
.image-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; padding: 8px 24px 24px; }
.image-card { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: all .25s; position: relative; }
.image-card:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,0,0,.3); }
.image-thumb { width: 100%; aspect-ratio: 16/10; background: var(--bg-1); overflow: hidden; }
.image-thumb img { width: 100%; height: 100%; object-fit: cover; }
.image-info { padding: 10px 12px; }
.image-name { font-size: 12px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.image-size { font-size: 10px; color: var(--text-2); margin-top: 2px; }
.image-delete { position: absolute; top: 6px; right: 6px; width: 26px; height: 26px; border-radius: 6px; background: rgba(0,0,0,.6); backdrop-filter: blur(8px); border: none; color: var(--text-2); font-size: 13px; cursor: pointer; display: none; align-items: center; justify-content: center; }
.image-card:hover .image-delete { display: flex; }
.image-delete:hover { color: var(--red); }

/* upload card */
.image-card.upload-card { border-style: dashed; border-color: rgba(108,92,231,.3); display: flex; align-items: center; justify-content: center; min-height: 160px; }
.image-card.upload-card:hover { border-color: var(--accent); background: rgba(108,92,231,.05); }
.upload-inner { text-align: center; }
.upload-inner .icon { font-size: 28px; margin-bottom: 6px; }
.upload-inner .label { font-size: 12px; color: var(--text-2); }

/* upload type selector */
.type-selector { display: flex; gap: 6px; }
.type-btn { padding: 5px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-3); color: var(--text-2); font: 500 11px 'Inter', sans-serif; cursor: pointer; transition: all .2s; }
.type-btn:hover, .type-btn.active { color: var(--text-1); border-color: var(--accent); background: rgba(108,92,231,.15); }

/* ── VIEWER PAGE ── */
.viewer-page { position: relative; }
#psv-viewer { width: 100%; height: 100%; }
.viewer-bar { position: absolute; top: 0; left: 0; right: 0; padding: 12px 16px; display: flex; align-items: center; justify-content: space-between; background: linear-gradient(180deg, rgba(6,6,11,.85) 0%, transparent 100%); z-index: 1000; pointer-events: none; opacity: 0.4; transition: opacity 0.3s; }
.viewer-bar:hover { opacity: 1; }
.viewer-bar > * { pointer-events: all; }
.viewer-name { font-size: 14px; font-weight: 500; }
.viewer-nav { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 16px; z-index: 1000; opacity: 0.4; transition: opacity 0.3s; }
.viewer-nav:hover { opacity: 1; }
.nav-btn { width: 150px; height: 60px; border-radius: 30px; background: rgba(22,22,34,0.6); backdrop-filter: blur(12px); border: 1px solid rgba(255,255,255,0.15); color: var(--text-1); font-size: 16px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all .2s; box-shadow: 0 4px 16px rgba(0,0,0,0.3); }
.nav-btn:hover { background: rgba(108,92,231,.5); border-color: rgba(108,92,231,.8); transform: translateY(-2px); }

/* ── MODAL ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(6,6,11,.7); backdrop-filter: blur(6px); z-index: 500; display: none; align-items: center; justify-content: center; }
.modal-overlay.active { display: flex; }
.modal { width: 400px; max-width: 92vw; background: var(--bg-2); border: 1px solid var(--border); border-radius: 16px; padding: 28px 24px; }
.modal h2 { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

/* ── UPLOAD PROGRESS ── */
.upload-overlay { position: fixed; inset: 0; background: rgba(6,6,11,.8); z-index: 600; display: none; align-items: center; justify-content: center; flex-direction: column; gap: 16px; }
.upload-overlay.active { display: flex; }
.progress-bar { width: 300px; height: 6px; border-radius: 3px; background: var(--bg-3); overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-l)); border-radius: 3px; transition: width .3s; width: 0%; }
.progress-text { font-size: 13px; color: var(--text-2); }

/* ── TOAST ── */
.toast { position: fixed; bottom: 20px; right: 20px; padding: 12px 20px; border-radius: var(--radius-sm); background: var(--bg-3); border: 1px solid var(--border); font-size: 13px; z-index: 700; transform: translateY(80px); opacity: 0; transition: all .3s; }
.toast.visible { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--red); color: var(--red); }
.toast.success { border-color: var(--green); color: var(--green); }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-3); }

/* ── PSV OVERRIDES ── */
.psv-container { background: var(--bg-0) !important; }

/* ── RESPONSIVE (VR headsets) ── */
@media (max-width: 800px) {
    .folder-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; padding: 8px 12px; }
    .image-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; padding: 8px 12px; }
    .page-header { padding: 14px 12px 8px; }
    .btn { padding: 10px 14px; }
    .nav-btn { width: 130px; height: 52px; font-size: 15px; }
    .viewer-nav { bottom: 20px; gap: 10px; }
}