/* Tokens/structure lifted from AstroWind's actual compiled output
   (astrowind.vercel.app): container width, pill-shaped buttons, font,
   and real breakpoints (640/768/1024px) -- this is also what actually
   fixes responsiveness, since the previous version had none. Colors
   swapped to SubsiMail's blue; kept AstroWind's own dark-navy page
   background rather than kallflow's near-black. */
:root {
    --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

    --color-primary: #465fff;
    --color-secondary: #3641f5;
    --color-accent: #8b5cf6;
    --color-text-heading: #f7f8f8;
    --color-text-default: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-bg-page: #030620;
    --color-card: #ffffff08;
    --color-card-hover: #ffffff0f;
    --color-border: #ffffff1a;

    --glow-blue: #465fff;
    --glow-cyan: #22d3ee;
    --glow-violet: #8b5cf6;

    --container-width: 80rem; /* max-w-7xl */
    --radius: 1.25rem;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    color: var(--color-text-default);
    background: var(--color-bg-page);
    line-height: 1.6;
    font-size: 16px;
}
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { color: var(--color-text-heading); font-family: var(--font-sans); }
img { max-width: 100%; display: block; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
}
@media (min-width: 640px) {
    .container { padding: 0 1.5rem; }
}

.muted { color: var(--color-text-muted); }
.accent { color: var(--color-accent); }

/* Header */
.site-header {
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    background: color-mix(in srgb, var(--color-bg-page) 85%, transparent);
    backdrop-filter: blur(8px);
    z-index: 20;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.logo { font-weight: 700; font-size: 1.15rem; color: var(--color-text-heading); }

.nav-toggle {
    display: inline-flex;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    padding: 0.5rem;
    color: var(--color-text-heading);
    cursor: pointer;
}
.main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem;
    background: var(--color-bg-page);
    border-bottom: 1px solid var(--color-border);
}
.main-nav.open { display: flex; }
.main-nav a:not(.btn) { padding: 0.6rem 0.5rem; border-radius: 0.5rem; font-size: 0.95rem; color: var(--color-text-muted); }
.main-nav a:not(.btn):hover { color: var(--color-text-heading); background: var(--color-card); }
.main-nav .btn { margin-top: 0.5rem; }
.header-cta { display: none; align-items: center; gap: 0.75rem; }

@media (min-width: 768px) {
    .nav-toggle { display: none; }
    .main-nav {
        display: flex;
        position: static;
        flex-direction: row;
        align-items: center;
        gap: 1.5rem;
        padding: 0;
        background: none;
        border: none;
    }
    .main-nav a:not(.btn) { padding: 0; font-size: 0.9rem; }
    .main-nav a:not(.btn):hover { background: none; }
    .nav-mobile-only { display: none; }
    .header-cta { display: flex; }
}

/* Buttons -- pill-shaped, matching AstroWind's .btn-primary/.btn-secondary */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    font-family: inherit;
    background: none;
    appearance: none;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
    white-space: nowrap;
}
.btn-primary { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-secondary); border-color: var(--color-secondary); }
.btn-secondary { background: transparent; color: var(--color-text-heading); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-card); }
.btn-ghost { color: var(--color-text-muted); border-color: transparent; padding-left: 0; padding-right: 0; }
.btn-ghost:hover { color: var(--color-text-heading); }
.btn-lg { padding: 0.9rem 2rem; font-size: 1rem; }

/* Glow blobs */
.glow-hero::before {
    content: "";
    position: absolute;
    inset: -15% -10% auto -10%;
    height: 28rem;
    background:
        radial-gradient(circle at 25% 30%, color-mix(in srgb, var(--glow-blue) 32%, transparent), transparent 60%),
        radial-gradient(circle at 75% 40%, color-mix(in srgb, var(--glow-violet) 28%, transparent), transparent 60%),
        radial-gradient(circle at 50% 10%, color-mix(in srgb, var(--glow-cyan) 22%, transparent), transparent 60%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
}

/* Hero */
.hero { position: relative; padding: 3.5rem 0 3rem; text-align: center; overflow: hidden; }
.hero-inner { position: relative; max-width: 48rem; margin: 0 auto; }
.hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}
.hero-sub { margin-top: 1.25rem; font-size: 1.05rem; color: var(--color-text-muted); }
.hero-cta { margin-top: 2rem; display: flex; flex-direction: column; gap: 0.75rem; align-items: center; }
@media (min-width: 640px) {
    .hero { padding: 5rem 0 4rem; }
    .hero h1 { font-size: 3rem; }
    .hero-sub { font-size: 1.15rem; }
    .hero-cta { flex-direction: row; justify-content: center; }
}
@media (min-width: 768px) {
    .hero { padding: 6.5rem 0 5rem; }
    .hero h1 { font-size: 3.75rem; }
}

/* Sections */
.section { padding: 3rem 0; position: relative; }
.section-alt { background: var(--color-card); }
.section-title { font-size: 1.65rem; font-weight: 700; text-align: center; letter-spacing: -0.01em; }
.section-sub { margin-top: 0.5rem; text-align: center; color: var(--color-text-muted); }
@media (min-width: 768px) {
    .section { padding: 5rem 0; }
    .section-title { font-size: 2.25rem; }
}

/* Grids -- 1 col mobile, 2 col sm, 3 col md+ */
.pillar-grid, .feature-grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    position: relative;
}
@media (min-width: 640px) {
    .pillar-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
}
@media (min-width: 1024px) {
    .pillar-grid, .feature-grid { grid-template-columns: repeat(3, 1fr); }
}
.pillar, .feature {
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    transition: background-color 0.15s, border-color 0.15s;
}
.pillar:hover, .feature:hover { background: var(--color-card-hover); border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-border)); }
.pillar h3, .feature h3 { font-size: 1.05rem; font-weight: 600; }
.pillar p, .feature p { margin-top: 0.5rem; color: var(--color-text-muted); font-size: 0.95rem; }

.icon-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 0.85rem;
    background: color-mix(in srgb, var(--color-primary) 15%, transparent);
    color: var(--color-primary);
    margin-bottom: 1rem;
}
.icon-badge svg { width: 1.4rem; height: 1.4rem; }

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 0.5rem;
    background: var(--color-primary);
    color: #fff;
    margin-right: 0.5rem;
}
.logo-mark svg { width: 1rem; height: 1rem; }
.logo { display: inline-flex; align-items: center; }

.steps-grid {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 768px) {
    .steps-grid { grid-template-columns: repeat(3, 1fr); }
}
.step { text-align: center; }
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-weight: 700;
    margin-bottom: 1rem;
}
.step h3 { font-size: 1.05rem; font-weight: 600; }
.step p { margin-top: 0.4rem; color: var(--color-text-muted); font-size: 0.95rem; }

/* Pricing */
.pricing-card {
    margin: 2rem auto 0;
    max-width: 30rem;
    text-align: center;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    position: relative;
}
@media (min-width: 768px) {
    .pricing-card { padding: 2.5rem; }
}
.pricing-price { font-size: 1.35rem; font-weight: 700; }
.pricing-detail { margin-top: 0.75rem; color: var(--color-text-muted); }
.pricing-card .btn { margin-top: 1.5rem; }

.pricing-tiers {
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}
@media (min-width: 640px) {
    .pricing-tiers { grid-template-columns: repeat(2, 1fr); }
}
.pricing-tier {
    padding: 1.25rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: color-mix(in srgb, var(--color-bg-page) 60%, transparent);
}
.pricing-tier-amount { font-size: 1.75rem; font-weight: 800; color: var(--color-text-heading); }
.pricing-tier-period { font-size: 0.85rem; font-weight: 500; color: var(--color-text-muted); }
.pricing-tier-label { margin-top: 0.25rem; font-size: 0.85rem; color: var(--color-text-muted); display: flex; align-items: center; justify-content: center; gap: 0.4rem; flex-wrap: wrap; }

.badge-save {
    display: inline-flex;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    background: color-mix(in srgb, #22c55e 20%, transparent);
    color: #4ade80;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-soon {
    display: inline-flex;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-accent) 20%, transparent);
    color: #c4b5fd;
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: 0.4rem;
}

.pricing-features {
    margin: 1.5rem 0 0;
    padding: 0;
    list-style: none;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.pricing-features li {
    font-size: 0.9rem;
    color: var(--color-text-default);
    padding-left: 1.5rem;
    position: relative;
}
.pricing-features li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.4rem;
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-primary) 25%, transparent);
}
.pricing-features li::after {
    content: "";
    position: absolute;
    left: 0.28rem;
    top: 0.62rem;
    width: 0.34rem;
    height: 0.18rem;
    border-left: 2px solid var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    transform: rotate(-45deg);
}

/* FAQ */
.faq-list { margin-top: 2rem; display: flex; flex-direction: column; gap: 1rem; max-width: 45rem; margin-left: auto; margin-right: auto; }
.faq-item { padding: 1.25rem 1.5rem; border-radius: 1rem; border: 1px solid var(--color-border); background: var(--color-card); }
.faq-item h3 { font-size: 1rem; font-weight: 600; }
.faq-item p { margin-top: 0.4rem; color: var(--color-text-muted); }

/* Final CTA */
.cta-final { text-align: center; overflow: hidden; }
.cta-final::before {
    content: "";
    position: absolute;
    inset: 10% 15% auto 15%;
    height: 16rem;
    background: radial-gradient(circle, color-mix(in srgb, var(--glow-blue) 28%, transparent), transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}
.cta-final h2 { position: relative; font-size: 1.65rem; font-weight: 700; }
.cta-final .btn { position: relative; margin-top: 1.5rem; }
@media (min-width: 768px) {
    .cta-final h2 { font-size: 2.25rem; }
}

/* Auth pages (signup/login/account) */
.auth-page { padding: 4rem 0; min-height: calc(100vh - 8rem); display: flex; align-items: center; justify-content: center; }
.auth-card {
    width: 100%;
    max-width: 26rem;
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-card);
}
.auth-card h1 { font-size: 1.5rem; font-weight: 700; text-align: center; }
.auth-sub { margin-top: 0.5rem; text-align: center; color: var(--color-text-muted); font-size: 0.95rem; }
.auth-card form { margin-top: 1.75rem; display: flex; flex-direction: column; gap: 1.1rem; }
.auth-card .btn { margin-top: 0.25rem; width: 100%; }
.auth-switch { margin-top: 1.5rem; text-align: center; font-size: 0.9rem; color: var(--color-text-muted); }
.auth-switch a { color: var(--color-primary); font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

.field-label { display: block; margin-bottom: 0.4rem; font-size: 0.85rem; font-weight: 600; color: var(--color-text-default); }
.field-input {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border-radius: 0.65rem;
    border: 1px solid var(--color-border);
    background: color-mix(in srgb, var(--color-bg-page) 60%, transparent);
    color: var(--color-text-heading);
    font-size: 0.95rem;
    font-family: inherit;
}
.field-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 25%, transparent);
}

.error-banner {
    margin-bottom: 1.5rem;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid color-mix(in srgb, #ef4444 40%, var(--color-border));
    background: color-mix(in srgb, #ef4444 12%, transparent);
    color: #fca5a5;
    font-size: 0.9rem;
}
.success-banner {
    margin-bottom: 1.5rem;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid color-mix(in srgb, #22c55e 40%, var(--color-border));
    background: color-mix(in srgb, #22c55e 12%, transparent);
    color: #86efac;
    font-size: 0.9rem;
}

/* Account / settings page -- structure modeled on Preline UI's free
   "account-settings-page" block (a real, live template, same reasoning as
   the marketing page's AstroWind reference): one flat card per concern,
   label-left/value-right rows separated by quiet hairlines (no boxes
   inside boxes), right-aligned actions, no colored status pills or dashed
   empty-state placeholders. */
.settings-page { padding: 3.5rem 0 5rem; min-height: calc(100vh - 8rem); }
.container-narrow { max-width: 40rem; }
.page-title { font-size: 1.6rem; font-weight: 800; margin-bottom: 1.75rem; }

.settings-card {
    padding: 1.75rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    background: var(--color-card);
}
.settings-card + .settings-card { margin-top: 1.5rem; }
@media (min-width: 640px) {
    .settings-card { padding: 2rem; }
}
.settings-card-head h2 { font-size: 1.05rem; font-weight: 700; }
.settings-card-head p { margin-top: 0.35rem; font-size: 0.88rem; color: var(--color-text-muted); }
.settings-card .error-banner, .settings-card .success-banner { margin-top: 1.25rem; }

.field-row {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 1rem 0;
    border-top: 1px solid var(--color-border);
}
.settings-card-head + .field-row { border-top: none; padding-top: 1.5rem; }
@media (min-width: 640px) {
    .field-row { flex-direction: row; gap: 1.5rem; align-items: flex-start; padding: 1.1rem 0; }
    .settings-card-head + .field-row { padding-top: 1.75rem; }
    .field-row .field-label { flex: 0 0 10rem; padding-top: 0.55rem; }
}
.field-row-value { flex: 1; min-width: 0; }
.field-row-value .field-input { margin: 0; }
.field-row-static { font-size: 0.95rem; color: var(--color-text-heading); }
@media (min-width: 640px) { .field-row-static { padding-top: 0.55rem; } }

.field-hint { margin-top: 0.4rem; font-size: 0.82rem; color: var(--color-text-muted); }
.text-success { color: #86efac; }
.text-warning { color: #fcd34d; }

.settings-card-actions { display: flex; justify-content: flex-end; margin-top: 1.5rem; }

.code-block { position: relative; }
.code-block pre {
    margin: 0;
    padding: 2.5rem 1rem 1rem;
    border-radius: 0.6rem;
    background: color-mix(in srgb, var(--color-bg-page) 60%, transparent);
    overflow-x: auto;
}
.code-block code {
    display: block;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.78rem;
    line-height: 1.6;
    word-break: break-all;
    white-space: pre-wrap;
    color: var(--color-text-heading);
}
.btn-copy {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    flex-shrink: 0;
    padding: 0.4rem 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-page);
    color: var(--color-text-heading);
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.btn-copy:hover { border-color: color-mix(in srgb, var(--color-primary) 50%, var(--color-border)); }
.btn-copy.is-copied { border-color: color-mix(in srgb, #22c55e 50%, var(--color-border)); color: #86efac; }

/* Footer */
.site-footer { border-top: 1px solid var(--color-border); padding: 2.5rem 0 1.5rem; }
.footer-inner { display: flex; flex-direction: column; gap: 1.5rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; font-size: 0.9rem; color: var(--color-text-muted); }
.footer-links a:hover { color: var(--color-text-heading); }
.footer-copyright { margin-top: 1.5rem; font-size: 0.8rem; color: var(--color-text-muted); }
@media (min-width: 640px) {
    .footer-inner { flex-direction: row; justify-content: space-between; }
}