/* ============================================================
   style.css — M-SHELF
   ============================================================ */

:root {
  --color-bg-black:    #050a14;
  --color-bg:          #0a1628;
  --color-panel:       #0e1f38;
  --color-panel-light: #142b4d;
  --color-border:      #1f4068;
  --color-cyan:        #4fd6ff;
  --color-cyan-soft:   #8be9ff;
  --color-accent-blue: #2b6cff;
  --color-text-bright: #e7f2ff;
  --color-text-muted:  #93b3da;
  --color-success:     #3ddc97;
  --color-error:       #ff5a6a;
  --font-display: 'Orbitron', sans-serif;
  --font-body:    'Rajdhani', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html { font-size: 18px; }

body { background: var(--color-bg-black); color: var(--color-text-bright); font-family: var(--font-body); font-weight: 500; font-size: 1.05rem; line-height: 1.5; min-height: 100vh; overflow-x: hidden; position: relative; }

.background-grid { position: fixed; inset: 0; z-index: -1; background-image: linear-gradient(rgba(79,214,255,0.06) 1px,transparent 1px),linear-gradient(90deg,rgba(79,214,255,0.06) 1px,transparent 1px); background-size: 40px 40px; background-color: var(--color-bg-black); }
.background-grid::before { content:''; position:absolute; inset:0; background: radial-gradient(ellipse at top,rgba(43,108,255,0.18),transparent 60%),radial-gradient(ellipse at bottom,rgba(79,214,255,0.10),transparent 60%); }

/* ── Header ── */
.site-header { border-bottom: 1px solid var(--color-border); background: linear-gradient(180deg,rgba(14,31,56,0.9),rgba(10,22,40,0.6)); backdrop-filter: blur(4px); }
.header-inner { max-width: 820px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 14px; }
.logo-slot { width: 42px; height: 42px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; border: 1.5px solid var(--color-border); border-radius: 6px; background: var(--color-panel); }
.logo-img { width: 100%; height: 100%; object-fit: contain; padding: 5px; }
h1 { font-family: var(--font-display); font-size: clamp(15px,4vw,19px); letter-spacing: 1.2px; line-height: 1.3; }
h1 span { color: var(--color-cyan); }
.subtitle { color: var(--color-text-muted); font-size: clamp(11px,2.6vw,13px); letter-spacing: 0.6px; margin-top: 2px; text-transform: uppercase; }
.back-link { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; font-family: var(--font-body); font-weight: 600; font-size: 0.85rem; color: var(--color-cyan-soft); text-decoration: none; padding: 9px 16px; border: 1.5px solid var(--color-border); border-radius: 4px; background: var(--color-panel); transition: all 0.18s; white-space: nowrap; }
.back-link:hover { color: var(--color-cyan); border-color: var(--color-cyan); background: rgba(79,214,255,0.08); }

/* ── Main ── */
.main-container { max-width: 820px; margin: 0 auto; padding: 28px 18px 70px; display: flex; flex-direction: column; gap: 20px; }

/* ── Panel ── */
.panel { background: linear-gradient(160deg,var(--color-panel),var(--color-bg)); border: 1px solid var(--color-border); border-radius: 4px; padding: 24px 22px; clip-path: polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px)); box-shadow: 0 0 0 1px rgba(79,214,255,0.05),0 20px 50px rgba(0,0,0,0.45); }
.filter-panel { padding: 20px 22px; }
.hidden { display: none !important; }

/* ── Loading / Error ── */
.loading-wrap { display: flex; flex-direction: column; align-items: center; padding: 40px 20px; gap: 20px; }
.spinner { width: 44px; height: 44px; border: 4px solid var(--color-border); border-top-color: var(--color-cyan); border-radius: 50%; animation: spin 0.8s linear infinite; box-shadow: 0 0 10px rgba(79,214,255,0.3); }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-text-muted); animation: pulse-txt 1.4s ease-in-out infinite; }
@keyframes pulse-txt { 0%,100%{opacity:0.5}50%{opacity:1} }
.error-wrap { display: flex; flex-direction: column; align-items: center; text-align: center; padding: 30px 20px; gap: 10px; }
.error-icon { font-size: 2.4rem; }
.error-msg { color: var(--color-text-muted); font-size: 0.95rem; line-height: 1.6; }
.empty-state { color: var(--color-text-muted); font-size: 0.92rem; padding: 20px 4px; }

/* ── Fields ── */
.field { margin-bottom: 0; }
.field-label { display: block; font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 1px; text-transform: uppercase; color: var(--color-cyan-soft); margin-bottom: 8px; }
select { width: 100%; appearance: none; -webkit-appearance: none; background-color: var(--color-panel-light); background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234fd6ff' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 18px; border: 1.5px solid var(--color-border); color: var(--color-text-bright); font-family: var(--font-body); font-weight: 600; font-size: 1rem; padding: 12px 40px 12px 14px; border-radius: 4px; cursor: pointer; transition: border-color 0.18s; }
select:focus { outline: none; border-color: var(--color-cyan); box-shadow: 0 0 0 3px rgba(79,214,255,0.18); }
select option { background: var(--color-panel); }

/* ── Btn primary ── */
.btn-primary { width: 100%; padding: 15px; font-family: var(--font-display); font-size: 0.82rem; letter-spacing: 1px; color: var(--color-bg-black); background: linear-gradient(135deg,var(--color-cyan),var(--color-cyan-soft)); border: none; border-radius: 4px; cursor: pointer; text-transform: uppercase; transition: all 0.2s; clip-path: polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px)); }
.btn-primary:hover { box-shadow: 0 0 22px rgba(79,214,255,0.5); transform: translateY(-1px); }

.btn-ghost-small { background: transparent; border: 1px solid var(--color-border); color: var(--color-text-muted); font-family: var(--font-body); font-size: 0.82rem; font-weight: 600; padding: 6px 12px; border-radius: 3px; cursor: pointer; text-decoration: none; transition: all 0.15s; white-space: nowrap; }
.btn-ghost-small:hover { border-color: var(--color-cyan); color: var(--color-cyan); }
.btn-close:hover { border-color: var(--color-error); color: var(--color-error); }

/* ── Section headers ── */
.shelf-section { margin-bottom: 28px; }
.shelf-section-title { font-family: var(--font-display); font-size: 0.8rem; letter-spacing: 1px; color: var(--color-cyan); text-transform: uppercase; margin-bottom: 14px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }

/* ── Shelf grid ── */
.shelf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }

.shelf-card { background: linear-gradient(160deg,var(--color-panel),var(--color-bg)); border: 1px solid var(--color-border); border-radius: 4px; padding: 18px 16px; display: flex; flex-direction: column; gap: 10px; clip-path: polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px)); transition: border-color 0.18s, box-shadow 0.18s; }
.shelf-card:hover { border-color: rgba(79,214,255,0.35); box-shadow: 0 0 16px rgba(79,214,255,0.08); }

.shelf-card-icon { font-size: 2rem; line-height: 1; }
.shelf-card-body { flex: 1; }
.shelf-card-title { font-weight: 700; color: var(--color-text-bright); font-size: 1rem; margin-bottom: 4px; line-height: 1.3; }
.shelf-card-desc { color: var(--color-text-muted); font-size: 0.88rem; line-height: 1.4; margin-bottom: 6px; }
.shelf-card-meta { font-size: 0.78rem; color: var(--color-text-muted); }

.shelf-card-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.btn-preview { display: inline-flex; align-items: center; gap: 5px; background: var(--color-panel-light); border: 1px solid var(--color-border); color: var(--color-cyan-soft); font-family: var(--font-body); font-size: 0.85rem; font-weight: 600; padding: 7px 14px; border-radius: 4px; cursor: pointer; transition: all 0.15s; }
.btn-preview:hover { border-color: var(--color-cyan); color: var(--color-cyan); background: rgba(79,214,255,0.08); }
.btn-download { display: inline-flex; align-items: center; gap: 5px; background: var(--color-accent-blue); color: #fff; font-family: var(--font-body); font-size: 0.85rem; font-weight: 700; padding: 7px 14px; border-radius: 4px; text-decoration: none; transition: background 0.15s; }
.btn-download:hover { background: #1d54d6; }

/* ── Modal ── */
.modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(5,10,20,0.88); backdrop-filter: blur(4px); }
.modal-panel { position: relative; z-index: 1; width: 100%; max-width: 900px; height: min(85vh,700px); background: var(--color-panel); border: 1px solid var(--color-cyan); border-radius: 4px; display: flex; flex-direction: column; box-shadow: 0 0 40px rgba(79,214,255,0.15); clip-path: polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,20px 100%,0 calc(100% - 20px)); }
.modal-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--color-border); flex-wrap: wrap; }
.modal-filename { font-family: var(--font-display); font-size: 0.72rem; letter-spacing: 0.5px; color: var(--color-cyan-soft); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.modal-actions { display: flex; gap: 8px; flex-shrink: 0; }
.modal-body { flex: 1; overflow: hidden; }
.preview-iframe { width: 100%; height: 100%; border: none; background: #fff; }

/* ── Toast ── */
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px); background: var(--color-panel-light); border: 1px solid var(--color-cyan); color: var(--color-cyan); font-family: var(--font-body); font-weight: 700; font-size: 0.95rem; padding: 12px 24px; border-radius: 4px; opacity: 0; transition: opacity 0.2s,transform 0.2s; pointer-events: none; z-index: 1100; white-space: nowrap; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Footer ── */
.site-footer { text-align: center; color: var(--color-text-muted); font-size: 0.78rem; padding: 24px; letter-spacing: 0.5px; }

/* ── Responsive ── */
@media (max-width: 600px) {
  html { font-size: 17px; }
  .header-inner { padding: 12px 16px; }
  .main-container { padding: 16px 12px 60px; }
  .shelf-grid { grid-template-columns: 1fr; }
  .modal-panel { height: 90vh; }
  .back-link { font-size: 0.78rem; padding: 8px 10px; }
}

/* ── Password badge on card ── */
.shelf-card-title-row { display: flex; align-items: flex-start; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.card-pwd-badge { font-family: var(--font-display); font-size: 0.58rem; letter-spacing: 0.8px; padding: 2px 7px; border-radius: 20px; background: rgba(79,214,255,0.1); color: var(--color-cyan-soft); border: 1px solid rgba(79,214,255,0.25); flex-shrink: 0; margin-top: 2px; }
.card-pwd-unlocked { background: rgba(61,220,151,0.1); color: var(--color-success); border-color: rgba(61,220,151,0.35); }

/* ── Preview spinner ── */
.modal-body { flex: 1; overflow: hidden; position: relative; }
.preview-spinner-wrap {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; background: var(--color-panel);
}
.preview-iframe { width: 100%; height: 100%; border: none; background: #fff; position: relative; z-index: 1; }
.preview-iframe.iframe-loading { opacity: 0; }
.preview-iframe:not(.iframe-loading) { opacity: 1; transition: opacity 0.3s ease; }

/* ── Password modal ── */
.modal-panel--pwd { max-width: 420px; height: auto; clip-path: polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px)); }
.pwd-body { padding: 28px 24px; display: flex; flex-direction: column; align-items: center; text-align: center; }
.pwd-subtitle { color: var(--color-text-muted); font-size: 0.92rem; line-height: 1.5; margin-bottom: 24px; }

.pin-wrap { width: 100%; }
.pin-input {
  width: 100%;
  text-align: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 6px;
  background: var(--color-panel-light);
  border: 2px solid var(--color-border);
  color: var(--color-cyan);
  padding: 18px 16px;
  border-radius: 6px;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  caret-color: var(--color-cyan);
  text-transform: uppercase;
}
.pin-input:focus { border-color: var(--color-cyan); box-shadow: 0 0 0 3px rgba(79,214,255,0.2), 0 0 24px rgba(79,214,255,0.12); }
.pin-input::placeholder { color: var(--color-border); letter-spacing: 3px; font-size: 1rem; }
.pin-input:disabled { opacity: 0.5; cursor: not-allowed; }

@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-8px); }
  40%      { transform: translateX(8px); }
  60%      { transform: translateX(-6px); }
  80%      { transform: translateX(6px); }
}
.pin-input.shake { animation: shake 0.35s ease; border-color: var(--color-error); box-shadow: 0 0 0 3px rgba(255,90,106,0.2); }

.pwd-error { color: var(--color-error); font-size: 0.88rem; margin-top: 12px; }

/* ── Decrypt animation ── */
.decrypt-wrap {
  width: 100%; margin-top: 20px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.decrypt-text {
  font-family: var(--font-display); font-size: 0.68rem;
  letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--color-cyan);
  animation: pulse-txt 0.8s ease-in-out infinite;
}
.decrypt-track {
  width: 100%; height: 8px; position: relative;
  background: var(--color-panel-light);
  border: 1px solid var(--color-border);
  border-radius: 4px; overflow: hidden;
}
.decrypt-bar {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-cyan), var(--color-cyan-soft));
  border-radius: 4px;
  transition: width 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 12px rgba(79,214,255,0.8), 0 0 24px rgba(79,214,255,0.4);
}
.decrypt-scanline {
  position: absolute; top: 0; left: -40%;
  width: 40%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  animation: scanline 1.2s linear infinite;
}
@keyframes scanline { to { left: 140%; } }

.decrypt-hex {
  font-family: var(--font-display); font-size: 0.55rem;
  letter-spacing: 2px; color: rgba(79,214,255,0.4);
  height: 14px; overflow: hidden; width: 100%;
  text-align: center; word-break: break-all;
  animation: hex-flicker 0.1s steps(1) infinite;
}
@keyframes hex-flicker {
  0%   { opacity: 1; }
  50%  { opacity: 0.4; }
  100% { opacity: 1; }
}