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

/* ── Tokens ── */
:root {
    --bg:        #0a0a0f;
    --surface:   #13131d;
    --surface2:  #1c1c2e;
    --border:    #2a2a40;
    --text:      #e8e8f0;
    --muted:     #6b6b8a;
    --accent:    #7b6ef6;
    --accent2:   #4ecca3;
    --red:       #f25f6a;
    --orange:    #f5a623;
    --green:     #4ecca3;
    --radius:    12px;
    --radius-sm: 8px;
}

/* ── Base ── */
html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Header ── */
header {
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(12px);
    z-index: 100;
}

.header-inner {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'Syne', sans-serif;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
}

.dot { color: var(--accent); }

.header-tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 1px solid var(--border);
    padding: 4px 12px;
    border-radius: 20px;
}

/* ── Hero ── */
.hero {
    max-width: 860px;
    margin: 0 auto;
    padding: 80px 24px 48px;
}

.eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
}

.hero-title {
    font-family: 'Syne', sans-serif;
    font-size: clamp(2.4rem, 6vw, 3.8rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--text);
    margin-bottom: 20px;
}

.accent { color: var(--accent2); }

.hero-sub {
    font-size: 1.05rem;
    color: var(--muted);
    max-width: 520px;
    font-weight: 400;
    line-height: 1.7;
}

/* ── Main / Card ── */
main {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 24px 80px;
    flex: 1;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

/* ── Field ── */
.field { display: flex; flex-direction: column; gap: 12px; }

.field-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--muted);
}

/* ── Length Buttons ── */
.length-buttons {
    display: flex;
    gap: 10px;
}

.len-btn {
    flex: 1;
    padding: 16px 12px 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--muted);
    font-family: 'DM Sans', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
}

.len-btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.len-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 0 24px rgba(123, 110, 246, 0.35);
}

.len-hint {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    opacity: 0.7;
}

/* ── Generate Button ── */
.generate-btn {
    width: 100%;
    padding: 18px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.2s ease;
}

.generate-btn:hover {
    background: #6a5de8;
    box-shadow: 0 8px 28px rgba(123, 110, 246, 0.4);
    transform: translateY(-1px);
}

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

.btn-icon { font-size: 1.1rem; }

/* ── Output ── */
.output-box {
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 64px;
}

.output-text {
    font-family: 'DM Mono', monospace;
    font-size: 1.05rem;
    color: var(--accent2);
    flex: 1;
    word-break: break-all;
    letter-spacing: 0.5px;
}

.copy-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 18px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    letter-spacing: 0.5px;
}

.copy-btn:hover {
    border-color: var(--accent2);
    color: var(--accent2);
}

.copy-btn.copied {
    background: var(--accent2);
    border-color: var(--accent2);
    color: #0a0a0f;
}

/* ── Strength ── */
.strength-section { display: flex; flex-direction: column; gap: 10px; }

.strength-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.strength-label {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.strength-track {
    background: var(--surface2);
    border-radius: 20px;
    height: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.strength-fill {
    height: 100%;
    border-radius: 20px;
    transition: width 0.5s ease, background 0.5s ease;
    width: 0%;
}

/* ── About ── */
.about {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 72px 24px;
}

.about-inner {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    gap: 64px;
    align-items: flex-start;
}

.about-text { flex: 1; }

.about-name {
    font-family: 'Syne', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}

.about-bio {
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.8;
    max-width: 380px;
}

.about-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 28px;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface2);
    transition: all 0.2s ease;
    min-width: 220px;
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: translateX(4px);
}

.social-icon {
    font-family: 'DM Mono', monospace;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--border);
    padding: 24px;
    text-align: center;
    color: var(--muted);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

/* ── Responsive ── */
@media (max-width: 640px) {
    .card { padding: 24px 20px; }
    .about-inner { flex-direction: column; gap: 36px; }
    .social-link { min-width: unset; }
    .hero { padding: 48px 24px 32px; }
    .len-btn { font-size: 1.2rem; }
}