@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

:root {
    --bg: #f4f9ff;
    --card-bg: #eaf4ff;
    --card-border: #1a1a1a;
    --input-bg: #f7fbff;
    --text: #1a1a1a;
    --text-secondary: #4d6075;
    --accent: #cfe5ff;
    --accent-deep: #4f8fd8;
    --accent-hover: #bddcff;
    --accent-light: rgba(79, 143, 216, 0.18);
    --red: #6a9fd8;
    --green: #8ec5ff;
    --success: #2d8f47;
    --error: #d14040;
    --border: #1a1a1a;
    --border-soft: #c9d9ea;
    --shadow-card: 4px 4px 0 #1a1a1a;
    --shadow-btn: 3px 3px 0 #1a1a1a;
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'DM Sans', system-ui, -apple-system, sans-serif;
    --transition: 0.15s ease;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.65;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Layout ─── */
.container {
    max-width: 680px;
    margin: 0 auto;
    padding: 36px 24px 56px;
    position: relative;
}

/* ─── Header ─── */
header {
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.logo-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 20px;
}

.logo-link {
    display: flex;
    align-items: center;
    transition: transform var(--transition);
}
.logo-link:hover { transform: translateY(-2px); }

.logo {
    height: 46px;
    width: auto;
}

.logo-separator {
    color: var(--border-soft);
    font-size: 18px;
    font-weight: 300;
    user-select: none;
}

h1 {
    font-size: clamp(2.2rem, 6vw, 3.6rem);
    font-weight: 900;
    margin-bottom: 10px;
    letter-spacing: -0.04em;
    line-height: 1.05;
}

h2 {
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

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

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.55;
}

/* ─── Cards ─── */
.card {
    background: var(--card-bg);
    border: 3px solid var(--card-border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
    position: relative;
}

/* ─── Forms ─── */
.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.83rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text);
    letter-spacing: 0.01em;
    text-transform: uppercase;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    font-family: var(--font);
    font-weight: 500;
    background: var(--input-bg);
    border: 3px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    transition: box-shadow var(--transition), transform var(--transition);
    box-shadow: 2px 2px 0 var(--card-border);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    box-shadow: 3px 3px 0 var(--card-border);
    transform: translate(-1px, -1px);
}

.form-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 5px;
    line-height: 1.5;
    font-weight: 500;
}
.hint.center { text-align: center; }

.error-text {
    font-size: 0.78rem;
    color: var(--error);
    display: block;
    margin-top: 4px;
    min-height: 16px;
}

.permission-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    margin: 6px 0 4px;
    background: #f7fbff;
    border: 3px solid var(--card-border);
    border-radius: var(--radius-sm);
    box-shadow: 2px 2px 0 var(--card-border);
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    line-height: 1.45;
}

.permission-check input {
    width: 18px;
    height: 18px;
    margin-top: 1px;
    accent-color: var(--accent-deep);
    flex: 0 0 auto;
}

.key-status {
    font-size: 0.78rem;
    display: block;
    margin-top: 4px;
    min-height: 16px;
}
.key-status.valid { color: var(--success); }
.key-status.invalid { color: var(--error); }
.key-status.checking { color: var(--accent); }

/* ─── API Key Section ─── */
.api-key-section {
    margin-bottom: 18px;
}

.api-key-section summary {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 700;
    padding: 6px 0;
    transition: color var(--transition);
    list-style: none;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.api-key-section summary::-webkit-details-marker { display: none; }
.api-key-section summary::before {
    content: '▸ ';
    font-size: 0.7rem;
    margin-right: 4px;
}
.api-key-section[open] summary::before { content: '▾ '; }
.api-key-section summary:hover { color: var(--accent-deep); }

.api-key-content {
    padding-top: 14px;
}

.api-key-toggle {
    display: flex;
    gap: 6px;
    margin-bottom: 14px;
}

.toggle-btn {
    flex: 1;
    padding: 8px 14px;
    font-size: 0.8rem;
    font-family: var(--font);
    font-weight: 700;
    background: #fff;
    border: 2.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 2px 2px 0 var(--card-border);
}

.toggle-btn.active {
    border-color: var(--card-border);
    color: var(--text);
    background: var(--accent);
    box-shadow: 2px 2px 0 var(--card-border);
}

.toggle-btn:hover:not(.active) {
    background: #f5f5f5;
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 var(--card-border);
}

/* ─── Buttons ─── */
.primary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 800;
    font-family: var(--font);
    background: var(--accent);
    color: var(--text);
    border: 3px solid var(--card-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    gap: 8px;
    box-shadow: var(--shadow-btn);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.primary-btn:hover {
    background: var(--accent-hover);
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--card-border);
}

.primary-btn:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--card-border);
}

.primary-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.primary-btn.small {
    width: auto;
    padding: 9px 20px;
    font-size: 0.85rem;
}

.secondary-btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 0.85rem;
    font-weight: 800;
    font-family: var(--font);
    background: #fff;
    color: var(--text);
    border: 3px solid var(--card-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    box-shadow: var(--shadow-btn);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.secondary-btn:hover {
    background: var(--accent);
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--card-border);
}

.link-btn {
    background: none;
    border: none;
    color: var(--accent-deep);
    font-size: 0.82rem;
    font-family: var(--font);
    font-weight: 700;
    cursor: pointer;
    margin-top: 8px;
    transition: opacity var(--transition);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.link-btn:hover { opacity: 0.75; }

.link-btn:disabled {
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

/* ─── OTP ─── */
.otp-input-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin: 14px 0 8px;
}

.otp-input {
    flex: 1;
    padding: 14px;
    font-size: 1.4rem;
    font-family: var(--font);
    font-weight: 800;
    letter-spacing: 0.4em;
    text-align: center;
    background: var(--input-bg);
    border: 3px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    box-shadow: 2px 2px 0 var(--card-border);
    transition: box-shadow var(--transition), transform var(--transition);
}
.otp-input:focus {
    outline: none;
    box-shadow: 3px 3px 0 var(--card-border);
    transform: translate(-1px, -1px);
}

/* ─── Spinner ─── */
.spinner {
    width: 16px;
    height: 16px;
    border: 2.5px solid rgba(0,0,0,0.2);
    border-top-color: var(--text);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

.spinner.large {
    width: 36px;
    height: 36px;
    border-width: 3px;
    border-color: var(--border-soft);
    border-top-color: var(--accent-deep);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Progress ─── */
.progress-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 14px 0 8px;
}

.email-delivery-panel {
    margin-top: 8px;
    padding: 18px 20px;
    background: linear-gradient(180deg, #dcecff 0%, #edf6ff 100%);
    border: 3px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
}

.delivery-kicker {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-deep);
    margin-bottom: 8px;
}

.delivery-title {
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.4;
    color: var(--text);
    margin-bottom: 8px;
}

.delivery-copy {
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ─── Limitations ─── */
.limitations-card {
    background: #f8fbff;
    border: 3px solid var(--card-border);
    border-radius: var(--radius);
    padding: 24px 28px;
    margin-top: 20px;
    box-shadow: var(--shadow-card);
}

.limitations-card h3 {
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
    text-transform: uppercase;
}

.limitations-card ul {
    list-style: none;
    padding: 0;
}

.limitations-card li {
    position: relative;
    padding-left: 20px;
    font-size: 0.84rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.5;
    font-weight: 500;
}

.limitations-card li::before {
    content: '✕';
    position: absolute;
    left: 2px;
    color: var(--red);
    font-weight: 800;
    font-size: 0.7rem;
    top: 2px;
}

.cta-box {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 2px solid var(--border-soft);
    text-align: center;
}

.cta-box p {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text);
}

/* ─── Footer ─── */
footer {
    text-align: center;
    margin-top: 36px;
    padding-top: 20px;
    border-top: 2px solid var(--border-soft);
}

footer p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

footer a {
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    transition: color var(--transition);
    border-bottom: 2px solid var(--accent);
}
footer a:hover { color: var(--accent-deep); }

.footer-small {
    font-size: 0.72rem;
    color: var(--text-secondary);
    margin-top: 4px;
    opacity: 0.7;
}

/* ─── Sparkle Decorations ─── */
.sparkle {
    position: absolute;
    pointer-events: none;
    opacity: 0.8;
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.container:hover .sparkle { opacity: 1; transform: scale(1.1); }

.sparkle-1 { top: 20px; left: -30px; }
.sparkle-2 { top: 10px; right: -28px; }
.sparkle-3 { bottom: 100px; left: -38px; }
.sparkle-4 { bottom: 60px; right: -32px; }

.sparkle-1 svg, .sparkle-3 svg { fill: var(--red); }
.sparkle-2 svg, .sparkle-4 svg { fill: var(--green); }

.sparkle svg {
    width: 28px;
    height: 28px;
}

/* ─── Example Repos ─── */
.example-repos {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-top: 14px;
}

.example-repos .hint {
    width: 100%;
    text-align: center;
    margin-bottom: 2px;
    font-size: 0.75rem;
}

.example-pill {
    display: inline-block;
    padding: 5px 14px;
    font-size: 0.78rem;
    font-family: var(--font);
    font-weight: 700;
    background: #dcecff;
    border: 2.5px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    letter-spacing: 0.01em;
    box-shadow: 2px 2px 0 var(--card-border);
}

.example-pill:hover {
    background: var(--accent);
    transform: translate(-1px, -1px);
    box-shadow: 3px 3px 0 var(--card-border);
}

/* ─── Scan status badge ─── */
.scan-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid var(--card-border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.scan-badge.running {
    background: #e7f2ff;
    color: #4f8fd8;
    border-color: #4f8fd8;
}

/* ─── Responsive ─── */
@media (max-width: 520px) {
    .container { padding: 28px 16px 48px; }
    h1 { font-size: 1.85rem; }
    .logo { height: 34px; }
    .otp-input { font-size: 1.1rem; letter-spacing: 0.25em; }
    .sparkle { display: none; }
    .card { padding: 20px; border-radius: 10px; }
    .limitations-card { padding: 20px; }
    .permission-check { padding: 12px 14px; }
    .email-delivery-panel { padding: 16px; }
}