:root {
    --bg: #0f172a;
    --text: #f8fafc;
    --accent: #6366f1;
    --pink: #ec4899;
    --danger: #ef4444;
    --glass-bg: rgba(255,255,255,0.03);
    --glass-bg-hover: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.08);
    --glass-border-hover: rgba(255,255,255,0.16);
    --gradient: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    --radius: 24px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

body {
    font-family:'Outfit',sans-serif;
    background:var(--bg); color:var(--text);
    min-height:100vh; display:flex;
    justify-content:center; overflow-x:hidden;
}

/* ── Background blobs ── */
.background-blobs{position:fixed;inset:0;z-index:-1;filter:blur(100px);pointer-events:none}
.blob{position:absolute;width:500px;height:500px;border-radius:50%;opacity:.3}
.blob-1{top:-150px;right:-100px;background:var(--accent);animation:blob1 25s infinite alternate ease-in-out}
.blob-2{bottom:-150px;left:-100px;background:var(--pink);animation:blob2 30s infinite alternate ease-in-out}
@keyframes blob1{from{transform:translate(0,0) scale(1)}to{transform:translate(-150px,150px) scale(1.2)}}
@keyframes blob2{from{transform:translate(0,0) scale(1.2)}to{transform:translate(150px,-150px) scale(.9)}}

/* ── Layout ── */
.container{width:100%;max-width:900px;padding:60px 24px;display:flex;flex-direction:column;gap:40px;position:relative;z-index:1}
.glass-header{text-align:center}
h1{font-size:4rem;font-weight:600;letter-spacing:-2px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:8px}
.subtitle{opacity:.45;letter-spacing:4px;text-transform:uppercase;font-size:.8rem;font-weight:300}

/* ── Glass card ── */
.glass-card{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:var(--radius);padding:32px;transition:all .4s cubic-bezier(.4,0,.2,1)}

/* ── Form ── */
.add-note{display:flex;flex-direction:column;gap:20px}
.input-group{display:flex;flex-direction:column;gap:12px}
input,textarea{background:rgba(255,255,255,.05);border:1px solid var(--glass-border);border-radius:16px;padding:16px 20px;color:white;font-family:inherit;font-size:1.05rem;outline:none;transition:all .3s ease}
input::placeholder,textarea::placeholder{color:rgba(255,255,255,.28)}
input:focus,textarea:focus{border-color:var(--accent);background:rgba(255,255,255,.08);box-shadow:0 0 0 4px rgba(99,102,241,.12)}
textarea{height:120px;resize:none}
.primary-btn{background:var(--gradient);color:white;border:none;border-radius:16px;padding:16px;font-weight:600;font-size:1.05rem;cursor:pointer;box-shadow:0 4px 16px rgba(99,102,241,.3);transition:all .3s ease}
.primary-btn:hover{transform:translateY(-2px);filter:brightness(1.1)}
.primary-btn:active{transform:translateY(0)}

/* ── Notes grid ── */
.notes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.note-card{position:relative;min-height:200px;display:flex;flex-direction:column;justify-content:space-between}
.note-card:hover{transform:translateY(-8px);background:var(--glass-bg-hover);border-color:var(--glass-border-hover);box-shadow:0 20px 40px rgba(0,0,0,.4)}
.note-card h3{font-size:1.3rem;font-weight:600;margin-bottom:10px}
.note-card p{font-size:.98rem;line-height:1.7;opacity:.7}

/* ── Delete button ── */
.delete-form{position:absolute;top:18px;right:18px}
.delete-btn{background:rgba(239,68,68,.1);border:none;color:var(--danger);width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:all .3s ease}
.note-card:hover .delete-btn{opacity:1}
.delete-btn svg{width:18px;height:18px;pointer-events:none}
.delete-btn:hover{background:var(--danger);color:white;transform:scale(1.1)}

/* ── Animations ── */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeOutDown{to{opacity:0;transform:translateY(20px)}}
.note-card.appearing{animation:fadeInUp .4s ease forwards}
.note-card.removing{animation:fadeOutDown .3s ease forwards}

/* ── State messages ── */
.empty-state{grid-column:1/-1;text-align:center;padding:60px;opacity:.35;font-style:italic;border:2px dashed var(--glass-border);border-radius:var(--radius)}
.flash{padding:14px 24px;border-radius:16px;margin-bottom:4px;font-size:.95rem}
.flash-error{background:rgba(239,68,68,.15);border:1px solid rgba(239,68,68,.3);color:#fca5a5}

/* ── Toast ── */
.toast{position:fixed;bottom:32px;left:50%;transform:translateX(-50%) translateY(20px);background:rgba(20,20,40,.95);border:1px solid var(--glass-border);backdrop-filter:blur(12px);color:white;padding:14px 28px;border-radius:16px;font-size:.95rem;opacity:0;pointer-events:none;transition:all .3s ease;z-index:1000}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast-error{border-color:rgba(239,68,68,.4)}

/* ── Responsive ── */
@media(max-width:600px){h1{font-size:2.5rem}.container{padding:40px 16px;gap:24px}.glass-card{padding:24px}}

/* ── Auth ── */
.auth-card{max-width:480px;margin:0 auto;width:100%}
.auth-title{font-size:1.8rem;font-weight:600;margin-bottom:6px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.auth-subtitle{opacity:.45;font-size:.9rem;margin-bottom:28px}
.auth-form .input-group{gap:14px}
.auth-switch{margin-top:20px;text-align:center;opacity:.6;font-size:.9rem}
.auth-link{color:var(--accent);text-decoration:none;font-weight:600;transition:opacity .2s}
.auth-link:hover{opacity:.75}

/* ── User bar ── */
.user-bar{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:14px}
.user-chip{font-size:.85rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:20px;padding:6px 16px;opacity:.8}
.logout-link{font-size:.85rem;color:var(--danger);text-decoration:none;opacity:.8;transition:opacity .2s}
.logout-link:hover{opacity:1}

/* ── Actions and Utils ── */
.hidden { display: none !important; }
.card-actions { display: flex; gap: 8px; margin-top: 16px; align-self: flex-end; }

.icon-btn {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: var(--text);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}
.icon-btn:hover {
    background: var(--glass-bg-hover);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}
.delete-btn:hover {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}
.icon-btn svg { width: 18px; height: 18px; }

/* ── Edit Mode ── */
.edit-mode { width: 100%; }
.edit-form { display: flex; flex-direction: column; gap: 12px; }
.edit-form input, .edit-form textarea { width: 100%; font-size: 0.95rem; padding: 12px; }
.edit-buttons { display: flex; gap: 8px; justify-content: flex-end; }
.secondary-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text);
    padding: 8px 16px;
    border-radius: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}
.secondary-btn:hover { background: rgba(255,255,255,0.05); border-color: white; }