/* ── Tokens ─────────────────────────────────────────────── */
:root {
    --bg:            #f0eff5;
    --bg-alt:        #e8e7f0;
    --surface:       rgba(255,255,255,0.72);
    --surface-solid: #ffffff;
    --surface-alt:   rgba(244,243,250,0.8);
    --glass-blur:    blur(18px);
    --text:          #18181f;
    --text-2:        #3d3d4e;
    --muted:         #6b6b80;
    --accent:        #5b4ef8;
    --accent-2:      #7c6ffc;
    --accent-soft:   rgba(91,78,248,0.12);
    --accent-glow:   rgba(91,78,248,0.25);
    --success:       #0ea874;
    --warning:       #d97706;
    --danger:        #e5484d;
    --border:        rgba(120,110,200,0.18);
    --border-solid:  #d5d2e8;
    --shadow-sm:     0 2px 8px rgba(60,50,150,0.07);
    --shadow:        0 8px 32px rgba(60,50,150,0.12);
    --shadow-lg:     0 20px 60px rgba(60,50,150,0.18);
    --radius:        20px;
    --radius-sm:     12px;
    --radius-xs:     8px;
    --font-mono:     "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

    --s-very-weak:  #e5484d;
    --s-weak:       #f76b15;
    --s-medium:     #f5c518;
    --s-strong:     #0ea874;
    --s-very-strong:#5b4ef8;
}

:root[data-theme="dark"] {
    --bg:            #0d0d14;
    --bg-alt:        #12121e;
    --surface:       rgba(22,22,36,0.80);
    --surface-solid: #161624;
    --surface-alt:   rgba(30,30,48,0.80);
    --text:          #ededf5;
    --text-2:        #c4c4d4;
    --muted:         #7878a0;
    --accent:        #7c6ffc;
    --accent-2:      #a498ff;
    --accent-soft:   rgba(124,111,252,0.18);
    --accent-glow:   rgba(124,111,252,0.35);
    --success:       #12d690;
    --warning:       #fbbf24;
    --danger:        #ff6369;
    --border:        rgba(124,111,252,0.18);
    --border-solid:  #2e2e48;
    --shadow-sm:     0 2px 8px rgba(0,0,0,0.3);
    --shadow:        0 8px 32px rgba(0,0,0,0.45);
    --shadow-lg:     0 20px 60px rgba(0,0,0,0.6);
}

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

/* ── Base ────────────────────────────────────────────────── */
body {
    font-family: "Manrope", "Segoe UI", sans-serif;
    color: var(--text);
    min-height: 100vh;
    background: var(--bg);
    background-image:
        radial-gradient(ellipse 900px 700px at 0% 0%,   rgba(91,78,248,0.12) 0%, transparent 60%),
        radial-gradient(ellipse 600px 500px at 100% 10%,rgba(124,200,255,0.10) 0%, transparent 55%),
        radial-gradient(ellipse 700px 600px at 55% 100%,rgba(14,168,116,0.08) 0%, transparent 60%);
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle at 1px 1px, rgba(120,110,200,0.09) 1px, transparent 0);
    background-size: 28px 28px;
    pointer-events: none;
    z-index: 0;
}

button, input { font-family: inherit; }
button { cursor: pointer; }

/* ── Layout ─────────────────────────────────────────────── */
.page {
    max-width: 1120px;
    margin: 0 auto;
    padding: 44px 24px 80px;
    position: relative;
    z-index: 1;
}

.layout {
    display: grid;
    grid-template-columns: minmax(0,1.35fr) minmax(0,0.85fr);
    gap: 22px;
    align-items: start;
}

.side { display: flex; flex-direction: column; gap: 22px; }

/* ── Card (Glass) ───────────────────────────────────────── */
.card {
    background: var(--surface);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    animation: liftIn 0.55s cubic-bezier(0.22,1,0.36,1) both;
}

.side .card              { animation-delay: 0.07s; }
.side .card + .card      { animation-delay: 0.14s; }
.tips                    { margin-top: 22px; animation-delay: 0.11s; }

.card-header { margin-bottom: 22px; }
.card-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 5px;
    letter-spacing: -0.02em;
}
.card-header p {
    color: var(--muted);
    font-size: 0.9rem;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 30px;
    animation: liftIn 0.55s cubic-bezier(0.22,1,0.36,1) both;
}

.hero-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
}

.hero h1 {
    font-size: 2.8rem;
    line-height: 1.08;
    letter-spacing: -0.04em;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1rem;
    color: var(--muted);
    max-width: 560px;
    line-height: 1.6;
}

/* ── Theme Toggle ───────────────────────────────────────── */
.theme-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1.5px solid var(--border);
    background: var(--surface);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255,255,255,0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
    position: relative;
}

.theme-toggle::before {
    content: "☀️";
    font-size: 1.1rem;
    line-height: 1;
    transition: opacity 0.2s, transform 0.3s;
}

[data-theme="dark"] .theme-toggle::before {
    content: "🌙";
}

.theme-toggle:hover {
    transform: translateY(-2px) rotate(15deg);
    box-shadow: var(--shadow), 0 0 0 4px var(--accent-soft);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

/* ── Output ─────────────────────────────────────────────── */
.output label {
    display: block;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 10px;
}

.output-field {
    display: flex;
    gap: 8px;
    align-items: stretch;
    background: var(--surface-alt);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 6px 6px 14px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.output-field:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-soft);
}

.output-field input {
    flex: 1;
    padding: 10px 0;
    border: none;
    background: transparent;
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
    letter-spacing: 0.04em;
    min-width: 0;
}

.output-field input:focus { outline: none; }

.output-field input.is-updated {
    animation: flash 0.4s ease;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-xs);
    border: 1px solid transparent;
    background: transparent;
    color: var(--muted);
    transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s;
    flex-shrink: 0;
}

.icon-btn svg { width: 17px; height: 17px; stroke-width: 2; }

.icon-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: var(--border);
    transform: translateY(-1px);
}

.icon-btn:active { transform: translateY(0); }

.output-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 10px;
    font-size: 0.83rem;
    color: var(--muted);
}

.output-meta strong { color: var(--text); font-variant-numeric: tabular-nums; }

/* ── Strength ───────────────────────────────────────────── */
.strength { margin-top: 22px; }

.strength-segments {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
}

.strength-seg {
    flex: 1;
    height: 6px;
    border-radius: 999px;
    background: var(--border-solid);
    transition: background 0.4s ease, transform 0.2s ease;
    transform-origin: center bottom;
}

.strength-seg.active-very-weak  { background: var(--s-very-weak); transform: scaleY(1.4); }
.strength-seg.active-weak       { background: var(--s-weak);      transform: scaleY(1.4); }
.strength-seg.active-medium     { background: var(--s-medium);    transform: scaleY(1.4); }
.strength-seg.active-strong     { background: var(--s-strong);    transform: scaleY(1.4); }
.strength-seg.active-very-strong{ background: var(--s-very-strong);transform: scaleY(1.4); }

.strength-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.strength-label {
    font-size: 0.83rem;
    color: var(--muted);
    font-weight: 600;
}

.strength-badge {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--surface-alt);
    color: var(--muted);
    border: 1px solid var(--border);
    transition: background 0.3s, color 0.3s, border-color 0.3s;
    letter-spacing: 0.04em;
}

.strength-badge.very-weak   { background: rgba(229,72,77,0.12);   color: var(--s-very-weak);   border-color: rgba(229,72,77,0.2);   }
.strength-badge.weak        { background: rgba(247,107,21,0.12);  color: var(--s-weak);        border-color: rgba(247,107,21,0.2);  }
.strength-badge.medium      { background: rgba(245,197,24,0.12);  color: #b58a00;              border-color: rgba(245,197,24,0.2);  }
.strength-badge.strong      { background: rgba(14,168,116,0.12);  color: var(--s-strong);      border-color: rgba(14,168,116,0.2);  }
.strength-badge.very-strong { background: rgba(91,78,248,0.12);   color: var(--accent);        border-color: var(--accent-soft);    }

.strength-feedback {
    font-size: 0.87rem;
    color: var(--muted);
    line-height: 1.5;
}

.strength-feedback ul { list-style: none; display: flex; flex-direction: column; gap: 4px; margin-top: 6px; }
.strength-feedback li { padding-left: 14px; position: relative; }
.strength-feedback li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-size: 0.8rem; }

/* ── Controls ───────────────────────────────────────────── */
.controls { margin-top: 26px; display: flex; flex-direction: column; gap: 22px; }

.control-group label {
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 10px;
    display: block;
}

.range { display: flex; gap: 12px; align-items: center; }

.range input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
    height: 4px;
    cursor: pointer;
}

.range input[type="number"] {
    width: 76px;
    padding: 8px 10px;
    border-radius: var(--radius-xs);
    border: 1.5px solid var(--border);
    background: var(--surface-alt);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    text-align: center;
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
    transition: border-color 0.2s;
}

.range input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.helper { color: var(--muted); font-size: 0.83rem; margin-top: 8px; line-height: 1.5; }

/* ── Option Fieldset ────────────────────────────────────── */
.options {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--surface-alt);
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
}

.options legend {
    font-weight: 700;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    padding: 0 6px;
}

.option {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-2);
    cursor: pointer;
    transition: color 0.15s;
}

.option:hover { color: var(--text); }

.option input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

/* ── Actions ────────────────────────────────────────────── */
.actions { display: flex; gap: 10px; flex-wrap: wrap; }

.primary-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    box-shadow: 0 8px 24px var(--accent-glow);
    position: relative;
    overflow: hidden;
}

.primary-btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.18) 0%, transparent 60%);
    pointer-events: none;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 32px var(--accent-glow);
    background: var(--accent-2);
}

.primary-btn:active { transform: translateY(0); }

.primary-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.primary-btn svg { width: 16px; height: 16px; stroke-width: 2.5; }

.ghost-btn {
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--surface-alt);
    border: 1.5px solid var(--border);
    color: var(--text-2);
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s;
    -webkit-backdrop-filter: var(--glass-blur);
    backdrop-filter: var(--glass-blur);
}

.ghost-btn svg { width: 15px; height: 15px; stroke-width: 2; }

.ghost-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
    transform: translateY(-1px);
}

/* ── Analysis ───────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

.stat {
    background: var(--surface-alt);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.stat:hover {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.stat-label { font-size: 0.78rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.stat-value { font-size: 1.25rem; font-weight: 800; color: var(--text); font-variant-numeric: tabular-nums; }
.stat-unit  { font-size: 0.75rem; color: var(--muted); font-weight: 600; text-transform: uppercase; }

.analysis-block { margin-top: 20px; }
.analysis-block h3 {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--muted);
    margin-bottom: 12px;
}

.pattern-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.pattern-list li {
    font-size: 0.88rem;
    color: var(--muted);
    padding-left: 14px;
    position: relative;
    line-height: 1.5;
}

.pattern-list li::before {
    content: "–";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

/* ── Distribution ───────────────────────────────────────── */
.distribution { display: flex; flex-direction: column; gap: 9px; }

.distribution-row {
    display: grid;
    grid-template-columns: 90px 1fr 70px;
    align-items: center;
    gap: 10px;
}

.dist-label { font-size: 0.83rem; color: var(--muted); font-weight: 600; }

.dist-bar {
    height: 6px;
    background: var(--border-solid);
    border-radius: 999px;
    overflow: hidden;
}

.dist-bar span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    border-radius: 999px;
    transition: width 0.35s cubic-bezier(0.22,1,0.36,1);
}

.dist-value {
    text-align: right;
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
    color: var(--text-2);
    font-weight: 600;
}

.analysis-note { margin-top: 18px; font-size: 0.82rem; color: var(--muted); line-height: 1.5; }

/* ── Discord Widget ─────────────────────────────────────── */
.discord-embed {
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border);
    background: var(--surface-alt);
    overflow: hidden;
}

.discord-embed iframe { display: block; width: 100%; height: 340px; border: none; }

/* ── Tips ───────────────────────────────────────────────── */
.tips h2 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 14px;
    letter-spacing: -0.02em;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 18px;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    background: var(--surface-alt);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.5;
    transition: border-color 0.2s, background 0.2s;
}

.tip-item:hover { border-color: var(--accent); background: var(--accent-soft); color: var(--text-2); }

.tip-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.shortcut-list { display: flex; flex-wrap: wrap; gap: 8px; }

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--surface-alt);
    border: 1.5px solid var(--border);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
    color: var(--muted);
    font-weight: 600;
}

.shortcut-item kbd {
    background: var(--surface-solid);
    border: 1px solid var(--border-solid);
    border-radius: 5px;
    padding: 2px 7px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--accent);
    box-shadow: 0 2px 0 var(--border-solid);
}

/* ── Footer ─────────────────────────────────────────────── */
.footer {
    text-align: center;
    margin-top: 30px;
    color: var(--muted);
    font-size: 0.82rem;
}

/* ── Toast ──────────────────────────────────────────────── */
.toast {
    position: fixed;
    right: 22px;
    bottom: 22px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    background: var(--text);
    color: var(--bg);
    opacity: 0;
    transform: translateY(14px) scale(0.96);
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.22,1,0.36,1);
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    font-size: 0.9rem;
    z-index: 100;
    max-width: 300px;
}

.toast.show { opacity: 1; transform: translateY(0) scale(1); }
.toast.success { background: var(--success); color: #fff; }
.toast.warning { background: var(--warning); color: #fff; }
.toast.error   { background: var(--danger);  color: #fff; }

/* ── Misc Helpers ───────────────────────────────────────── */
.visually-hidden {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); border: 0;
}

/* ── Animations ─────────────────────────────────────────── */
@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

@keyframes liftIn {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0);    }
}

@keyframes flash {
    0%   { background: var(--accent-soft); }
    100% { background: transparent; }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
    .layout { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.2rem; }
}

@media (max-width: 640px) {
    .page { padding: 28px 16px 60px; }
    .card { padding: 20px; }
    .hero h1 { font-size: 1.9rem; }
    .hero-top { flex-direction: row; align-items: center; }
    .output-meta { flex-direction: column; gap: 4px; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .distribution-row { grid-template-columns: 80px 1fr 60px; }
    .tips-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
}