/* ============================================
   mail2note Landing Page
   ============================================
   Editorial-minimal aesthetic for Obsidian users.
   Dark hero (vault feel) → light features.
   ============================================ */

/* ---- Animations ---- */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* ---- Layout ---- */

.landing-body {
    background-color: var(--color-slate-950);
    overflow-x: hidden;
}

.landing-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ---- Navigation ---- */

.landing-nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-5) 0;
}

.landing-nav .landing-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.landing-nav__brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-white);
    text-decoration: none;
    letter-spacing: -0.03em;
}

.landing-nav__brand:hover {
    color: var(--color-white);
}

.landing-nav__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-violet-600);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--color-white);
}

.landing-nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.landing-nav__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-slate-300);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

.landing-nav__link:hover {
    color: var(--color-white);
}

.landing-nav__link--cta {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-md);
    color: var(--color-white);
    transition:
        background var(--duration-fast) var(--ease-out),
        border-color var(--duration-fast) var(--ease-out);
}

.landing-nav__link--cta:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}

.landing-nav__badge {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--color-violet-400);
    background: rgba(124, 58, 237, 0.15);
    border: 1px solid rgba(124, 58, 237, 0.25);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.03em;
}

/* ---- Hero ---- */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-24) 0 var(--space-16);
    background: linear-gradient(
        170deg,
        var(--color-slate-950) 0%,
        #1a1f3d 40%,
        #1e1a35 70%,
        var(--color-slate-950) 100%
    );
}

.hero__dev-banner {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.2);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
}

.hero__bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse 600px 400px at 20% 50%, rgba(124, 58, 237, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse 400px 300px at 80% 30%, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero__content {
    animation: fadeInUp 0.8s var(--ease-out) both;
}

.hero__eyebrow {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-violet-400);
    margin-bottom: var(--space-4);
}

.hero__title {
    font-size: var(--text-5xl);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
}

.hero__title--accent {
    background: linear-gradient(135deg, var(--color-violet-400), var(--color-violet-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__description {
    font-size: var(--text-lg);
    color: var(--color-slate-400);
    line-height: 1.7;
    max-width: 480px;
    margin-bottom: var(--space-8);
}

.hero__actions {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.hero__cta {
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.hero__cta:hover {
    box-shadow: 0 6px 28px rgba(124, 58, 237, 0.4);
}

.hero__secondary-link {
    font-size: var(--text-sm);
    color: var(--color-slate-400);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: color var(--duration-fast) var(--ease-out);
}

.hero__secondary-link:hover {
    color: var(--color-slate-300);
}

.hero__secondary-link i {
    font-size: 0.65rem;
    animation: float 2s ease-in-out infinite;
}

/* ---- Hero Visual (Email → Note transformation) ---- */

.hero__visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    animation: fadeIn 1s var(--ease-out) 0.3s both;
}

.hero__card {
    width: 100%;
    max-width: 360px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero__card--email {
    background: var(--color-white);
    animation: slideInLeft 0.8s var(--ease-out) 0.5s both;
}

.hero__card--note {
    background: #1e1e2e;
    border: 1px solid rgba(255, 255, 255, 0.08);
    animation: slideInRight 0.8s var(--ease-out) 0.9s both;
}

.hero__card-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.75rem 1rem;
    background: var(--color-slate-100);
    border-bottom: 1px solid var(--color-border);
}

.hero__card-header--note {
    background: #181825;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--color-slate-400);
    font-size: var(--text-sm);
    font-family: var(--font-display);
    gap: var(--space-2);
}

.hero__card-header--note i {
    color: var(--color-violet-400);
    font-size: var(--text-xs);
}

.hero__card-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-slate-300);
}

.hero__card-dot:nth-child(1) { background: #ff5f57; }
.hero__card-dot:nth-child(2) { background: #febc2e; }
.hero__card-dot:nth-child(3) { background: #28c840; }

.hero__card-body {
    padding: 1rem;
}

.hero__card-field {
    display: flex;
    gap: var(--space-2);
    margin-bottom: 0.4rem;
    font-size: var(--text-sm);
}

.hero__card-label {
    color: var(--color-text-muted);
    font-weight: 500;
    min-width: 52px;
}

.hero__card-value {
    color: var(--color-text);
}

.hero__card-divider {
    height: 1px;
    background: var(--color-border);
    margin: 0.75rem 0;
}

.hero__card-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

.hero__card-code {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--color-slate-400);
}

.hero__code-fence {
    color: var(--color-violet-400);
}

.hero__code-key {
    color: var(--color-violet-400);
    font-style: normal;
}

.hero__code-heading {
    color: var(--color-white);
    font-weight: 600;
}

.hero__transform-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-violet-600);
    border-radius: 50%;
    color: var(--color-white);
    font-size: var(--text-base);
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
    animation: pulse 2.5s ease-in-out infinite;
    animation-delay: 1.5s;
}

/* ---- How It Works ---- */

.how-it-works {
    padding: var(--space-24) 0;
    background: var(--color-slate-950);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.section-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-white);
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-3);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-slate-400);
    text-align: center;
    margin-bottom: var(--space-16);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.step {
    flex: 0 1 280px;
    text-align: center;
    padding: 0 var(--space-4);
}

.step__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-violet-400);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.step__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    color: var(--color-violet-400);
    font-size: var(--text-xl);
    transition: all var(--duration-normal) var(--ease-out);
}

.step:hover .step__icon {
    background: rgba(124, 58, 237, 0.12);
    border-color: rgba(124, 58, 237, 0.25);
    transform: translateY(-2px);
}

.step__title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.step__text {
    font-size: var(--text-sm);
    color: var(--color-slate-400);
    line-height: 1.6;
}

.step__text code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8em;
    background: rgba(124, 58, 237, 0.15);
    color: var(--color-violet-400);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
}

.step__connector {
    flex: 0 0 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    color: var(--color-slate-700);
}

.step__connector svg {
    width: 60px;
    height: 20px;
}

/* ---- Features ---- */

.features {
    padding: var(--space-24) 0;
    background: var(--color-background);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.section-title--dark {
    color: var(--color-text);
}

.section-subtitle--dark {
    color: var(--color-text-muted);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8) var(--space-6);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-subtle);
    transition:
        border-color var(--duration-normal) var(--ease-out),
        box-shadow var(--duration-normal) var(--ease-out),
        transform var(--duration-normal) var(--ease-out);
}

.feature-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-violet-100);
    border-radius: var(--radius-md);
    color: var(--color-violet-600);
    font-size: var(--text-lg);
    margin-bottom: var(--space-5);
}

.feature-card__title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

.feature-card__text {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
}

.feature-card__text code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85em;
    background: var(--color-violet-100);
    color: var(--color-violet-600);
    padding: 0.1em 0.35em;
    border-radius: var(--radius-sm);
}

/* ---- Footer ---- */

.landing-footer {
    padding: var(--space-8) 0;
    background: var(--color-background);
    border-top: 1px solid var(--color-border-subtle);
}

.landing-footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.landing-footer__brand {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-base);
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.landing-footer__copy {
    font-size: var(--text-sm);
    color: var(--color-text-subtle);
}

.landing-footer__copy a {
    color: var(--color-text-subtle);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

.landing-footer__copy a:hover {
    color: var(--color-accent);
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: var(--space-20) 0 var(--space-12);
    }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }

    .hero__title {
        font-size: var(--text-3xl);
    }

    .hero__description {
        font-size: var(--text-base);
    }

    .hero__actions {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .hero__visual {
        max-width: 360px;
        margin: 0 auto;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: var(--space-6);
    }

    .step {
        flex: none;
        max-width: 320px;
    }

    .step__connector {
        padding-top: 0;
        transform: rotate(90deg);
    }

    .section-title {
        font-size: var(--text-2xl);
    }

    .features__grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .landing-footer__inner {
        flex-direction: column;
        gap: var(--space-2);
        text-align: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero__title {
        font-size: var(--text-4xl);
    }
}