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

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

:root {
  --bg:       #0D0F14;
  --surface:  #151820;
  --border:   #252A35;
  --accent:   #4F8EF7;
  --accent2:  #A78BFA;
  --success:  #34D399;
  --error:    #F87171;
  --text:     #E8EAF0;
  --muted:    #7C8296;
  --radius:   16px;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 20px 40px;
  gap: 28px;
}

/* ── Header ── */
.header { text-align: center; padding-top: 8px; }
.lock-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, #1E2A4A 0%, #2A1E4A 100%);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  display: grid; place-items: center;
  margin: 0 auto 16px;
  font-size: 26px;
}
.header h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 26px; font-weight: 700; letter-spacing: -0.5px;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.header p { color: var(--muted); font-size: 13.5px; margin-top: 6px; }
/* ── Card ── */
.card {
  width: 100%; max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column; gap: 20px;
}

/* ── Drop zone ── */
.drop-zone {
  border: 1.5px dashed var(--border);
  border-radius: 12px; padding: 36px 20px; text-align: center;
  cursor: pointer; transition: border-color 0.2s, background 0.2s;
  position: relative;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(79, 142, 247, 0.04);
}
.drop-zone input[type="file"] {
  position: absolute; inset: 0; opacity: 0;
  cursor: pointer; width: 100%; height: 100%;
}
.drop-icon { font-size: 32px; margin-bottom: 10px; }
.drop-zone .label { font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 15px; color: var(--text); }
.drop-zone .sub { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ── File info ── */
.file-info {
  display: none; align-items: center; gap: 12px;
  background: rgba(79, 142, 247, 0.07);
  border: 1px solid rgba(79, 142, 247, 0.2);
  border-radius: 10px; padding: 12px 14px;
}
.file-info.show { display: flex; }
.file-info .pdf-badge {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: white; font-family: 'Space Grotesk', sans-serif;
  font-weight: 700; font-size: 11px; padding: 4px 7px;
  border-radius: 6px; flex-shrink: 0;
}
.file-info .fname { font-size: 13.5px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; }
.file-info .fsize { font-size: 12px; color: var(--muted); flex-shrink: 0; }
.btn-clear { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 16px; padding: 2px; flex-shrink: 0; line-height: 1; }

/* ── Password field ── */
.field-label { font-size: 12.5px; font-weight: 500; color: var(--muted); margin-bottom: 7px; letter-spacing: 0.02em; text-transform: uppercase; }
.password-wrap { position: relative; }
.password-wrap input {
  width: 100%; background: var(--bg); border: 1.5px solid var(--border);
  border-radius: 10px; color: var(--text); font-family: 'Inter', sans-serif;
  font-size: 15px; padding: 12px 44px 12px 14px; outline: none; transition: border-color 0.2s;
}
.password-wrap input::placeholder { color: var(--muted); }
.password-wrap input:focus { border-color: var(--accent); }
.password-wrap input.error-border { border-color: var(--error); }
.toggle-pw { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--muted); cursor: pointer; font-size: 18px; padding: 0; line-height: 1; }

/* ── Buttons ── */
.btn-unlock {
  width: 100%; padding: 14px;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  color: white; font-family: 'Space Grotesk', sans-serif;
  font-size: 15.5px; font-weight: 600; border: none; border-radius: 10px;
  cursor: pointer; transition: opacity 0.2s, transform 0.1s; letter-spacing: 0.01em;
}
.btn-unlock:hover { opacity: 0.9; }
.btn-unlock:active { transform: scale(0.98); }
.btn-unlock:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-download {
  width: 100%; padding: 14px;
  background: rgba(52, 211, 153, 0.1); color: var(--success);
  font-family: 'Space Grotesk', sans-serif; font-size: 15px; font-weight: 600;
  border: 1.5px solid rgba(52, 211, 153, 0.25); border-radius: 10px;
  cursor: pointer; transition: background 0.2s; display: none;
}
.btn-download.show { display: block; }
.btn-download:hover { background: rgba(52, 211, 153, 0.18); }

/* ── Status ── */
.status { display: none; align-items: center; gap: 10px; border-radius: 10px; padding: 12px 14px; font-size: 13.5px; font-weight: 500; }
.status.show { display: flex; }
.status.loading { background: rgba(79,142,247,0.08); border: 1px solid rgba(79,142,247,0.2); color: var(--accent); }
.status.success-msg { background: rgba(52,211,153,0.08); border: 1px solid rgba(52,211,153,0.2); color: var(--success); }
.status.error-msg { background: rgba(248,113,113,0.08); border: 1px solid rgba(248,113,113,0.2); color: var(--error); }
.spinner { width: 16px; height: 16px; border: 2px solid rgba(79,142,247,0.3); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.7s linear infinite; flex-shrink: 0; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Install banner ── */
#installBanner {
  display: none; align-items: center; gap: 12px;
  width: 100%; max-width: 420px;
  background: linear-gradient(135deg, rgba(79,142,247,0.1), rgba(167,139,250,0.1));
  border: 1px solid rgba(79,142,247,0.2);
  border-radius: 12px; padding: 14px 16px;
}
#installBanner.show { display: flex; }
#installBanner .banner-text { flex: 1; font-size: 13px; color: var(--text); }
#installBanner .banner-text strong { font-family: 'Space Grotesk', sans-serif; font-size: 14px; display: block; margin-bottom: 2px; }
#btnInstall {
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  color: white; font-family: 'Space Grotesk', sans-serif; font-weight: 600;
  font-size: 13px; border: none; border-radius: 8px; padding: 8px 14px; cursor: pointer; white-space: nowrap;
}
#btnDismiss { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 18px; padding: 2px; line-height: 1; }

/* ── Info strip ── */
.info-strip { display: flex; flex-direction: column; gap: 8px; max-width: 420px; width: 100%; }
.info-item { display: flex; align-items: flex-start; gap: 10px; font-size: 12.5px; color: var(--muted); }
.info-item .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--border); flex-shrink: 0; margin-top: 6px; }

/* ── Offline toast ── */
#offlineToast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: #1a1f2e; border: 1px solid var(--border);
  color: var(--muted); font-size: 13px; padding: 10px 18px;
  border-radius: 99px; white-space: nowrap;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
#offlineToast.show { opacity: 1; }