:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;--bg: #06060e;--surface: #0e0e1a;--border: rgba(255, 255, 255, .08);--border-accent: rgba(140, 120, 255, .25);--text: #e8e6f0;--text-dim: rgba(255, 255, 255, .45);--accent: #8c78ff;--accent-glow: rgba(140, 120, 255, .15);--gold: #f0c050;--gold-glow: rgba(240, 192, 80, .15);--danger: #ff5555}*{box-sizing:border-box;margin:0}html,body,#root{min-height:100vh;background:var(--bg);color:var(--text)}.app{max-width:52rem;margin:0 auto;padding:3rem 1.5rem 4rem}.header{text-align:center;margin-bottom:2.5rem}.header-icon{font-size:2.5rem;margin-bottom:.5rem;filter:drop-shadow(0 0 12px var(--accent-glow))}h1{font-size:1.75rem;font-weight:700;letter-spacing:-.03em;background:linear-gradient(135deg,var(--accent),var(--gold));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{color:var(--text-dim);font-size:.9rem;margin-top:.5rem;max-width:24rem;margin-inline:auto}.form{background:var(--surface);border:1px solid var(--border);border-radius:.75rem;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;margin-bottom:2.5rem}.field{display:flex;flex-direction:column;gap:.35rem}.field-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-dim)}.form input,.form textarea{background:#ffffff0a;border:1px solid var(--border);border-radius:.5rem;padding:.65rem .75rem;color:var(--text);font:inherit;font-size:.9rem;outline:none;transition:border-color .2s}.form input:focus,.form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.form textarea{resize:vertical;min-height:5rem}.form input::placeholder,.form textarea::placeholder{color:var(--text-dim)}.btn-seal{align-self:flex-end;background:linear-gradient(135deg,var(--accent),#6e5ce6);color:#fff;border:none;border-radius:.5rem;padding:.7rem 1.75rem;font:inherit;font-size:.9rem;font-weight:600;cursor:pointer;letter-spacing:.02em;transition:transform .15s,box-shadow .2s}.btn-seal:hover{transform:translateY(-1px);box-shadow:0 4px 20px var(--accent-glow)}.btn-seal:active{transform:translateY(0)}.section{margin-bottom:2.5rem}.section-title{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim);display:flex;align-items:center;gap:.5rem;margin-bottom:1rem}.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.dot-sealed{background:var(--accent);box-shadow:0 0 6px var(--accent)}.dot-revealed{background:var(--gold);box-shadow:0 0 6px var(--gold)}.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(16rem,1fr))}.card{background:var(--surface);border:1px solid var(--border);border-radius:.75rem;padding:1.25rem;display:flex;flex-direction:column;gap:.75rem;transition:border-color .2s,box-shadow .2s}.card:hover{border-color:var(--border-accent)}.card-sealed{border-left:3px solid var(--accent)}.card-revealed{border-left:3px solid var(--gold)}.card-header{display:flex;justify-content:space-between;align-items:center}.card-author{font-weight:600;font-size:.9rem}.btn-delete{background:none;border:none;color:var(--text-dim);font-size:1.2rem;cursor:pointer;padding:0 .25rem;line-height:1;border-radius:.25rem;transition:color .15s}.btn-delete:hover{color:var(--danger)}.sealed-body{display:flex;flex-direction:column;align-items:center;gap:.65rem;padding:.75rem 0}.lock-icon{font-size:1.75rem;opacity:.7}.sealed-text{font-size:.8rem;color:var(--text-dim);text-align:center}.countdown{display:flex;gap:.75rem}.countdown-unit{display:flex;flex-direction:column;align-items:center;min-width:2.5rem}.countdown-num{font-size:1.25rem;font-weight:700;font-variant-numeric:tabular-nums;color:var(--accent);text-shadow:0 0 12px var(--accent-glow)}.countdown-label{font-size:.6rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-dim)}.revealed-message{font-size:.9rem;line-height:1.6;color:#ffffffd9;white-space:pre-wrap;word-break:break-word}.card-date{font-size:.7rem;color:var(--text-dim);margin-top:auto;padding-top:.25rem;border-top:1px solid var(--border)}.empty{text-align:center;padding:3rem 1rem;color:var(--text-dim);font-size:.9rem}