/* ====================================
   CSS Variables & Reset
   ==================================== */

:root {
    --mint: #00c7be;
    --mint-dark: #00a89f;
    --ink: #1c1c1e;
    --ink-secondary: #6e6e73;
    --background: #ffffff;
    --background-secondary: #f5f5f7;
    --border-color: #e5e5ea;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.08);
    --radius-sm: 10px;
    --radius-md: 18px;
    --radius-lg: 28px;
    --section-padding-block: clamp(4rem, 8vw, 6.5rem);
    --font-primary: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--ink);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--mint-dark);
    margin-bottom: 0.75rem;
}

h1, h2, h3 {
    letter-spacing: -0.015em;
    font-weight: 700;
}

.section-title {
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--ink-secondary);
    max-width: 42em;
}

/* ====================================
   Buttons
   ==================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--mint);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--mint-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--background);
    color: var(--ink);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--mint);
    color: var(--mint-dark);
}

.btn[aria-disabled="true"] {
    opacity: 0.6;
    cursor: default;
    pointer-events: none;
}

/* ====================================
   Navigation
   ==================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.05rem;
}

.brand-mark {
    display: block;
    width: 32px;
    height: 32px;
    border-radius: 7px;
    box-shadow: 0 2px 8px rgba(0, 199, 190, 0.18);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.75rem;
    font-size: 0.95rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--ink-secondary);
    transition: color 0.15s ease;
}

.nav-menu a:hover {
    color: var(--ink);
}

.nav-cta {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--ink);
}

/* ====================================
   Hero
   ==================================== */

.hero {
    padding: clamp(3.5rem, 8vw, 6rem) 0 2rem;
    background: linear-gradient(180deg, #f2fdfc 0%, #ffffff 65%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
    align-items: center;
}

.hero .container > * {
    min-width: 0;
}

.hero-title {
    font-size: clamp(2.3rem, 5vw, 3.4rem);
    line-height: 1.08;
    margin-bottom: 1.1rem;
}

.hero-title .accent {
    color: var(--mint-dark);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--ink-secondary);
    max-width: 34em;
    margin-bottom: 1.75rem;
}

.hero-buttons {
    display: flex;
    gap: 0.85rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.hero-note {
    font-size: 0.85rem;
    color: var(--ink-secondary);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: min(280px, 100%);
    border-radius: 44px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.phone-frame img {
    width: 100%;
    height: auto;
}

/* ====================================
   Sections
   ==================================== */

section {
    padding-block: var(--section-padding-block);
}

.section-alt {
    background-color: var(--background-secondary);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto clamp(2.5rem, 5vw, 3.5rem);
}

.section-header .section-subtitle {
    margin: 0 auto;
}

/* Loop: brain dump -> step -> widget */

.loop-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.loop-grid > *,
.widget-grid > *,
.widget-visuals > *,
.privacy-grid > *,
.compare-grid > * {
    min-width: 0;
}

.loop-card {
    text-align: center;
}

.loop-card .step-frame {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    margin-bottom: 1.25rem;
}

.loop-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}

.loop-card p {
    color: var(--ink-secondary);
    font-size: 0.95rem;
}

.loop-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    background: var(--mint);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

/* Device section */

.device-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
    align-items: center;
}

.device-copy ul {
    list-style: none;
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.device-copy li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    color: var(--ink-secondary);
}

.device-copy li svg {
    flex-shrink: 0;
    margin-top: 0.15rem;
    color: var(--mint-dark);
}

.ipad-frame {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    background: var(--background);
}

.ipad-frame img {
    width: 100%;
    height: auto;
}

/* Widget section */

.device-grid > *,
.ipad-frame > *,
.device-copy > *,
.device-copy li > *,
.widget-copy > *,
.widget-copy li > * {
    min-width: 0;
}

.widget-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
}

.widget-copy ul {
    list-style: none;
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.widget-copy li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    color: var(--ink-secondary);
}

.widget-copy li svg {
    flex-shrink: 0;
    margin-top: 0.15rem;
    color: var(--mint-dark);
}

.widget-visuals {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 1.25rem;
    align-items: end;
}

.widget-card {
    background: #ffffff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 1rem;
}

.widget-card img {
    border-radius: 12px;
}

.lockscreen-card {
    background: #0b0b0d;
    border-radius: var(--radius-md);
    padding: 1.5rem 1rem;
    box-shadow: var(--shadow-sm);
}

.lockscreen-card img {
    border-radius: 10px;
}

/* Templates */

.template-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
}

.template-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    background: var(--background);
    border: 1px solid var(--border-color);
    font-size: 0.92rem;
    font-weight: 500;
}

/* Privacy */

.privacy-visual {
    display: flex;
    justify-content: center;
    margin-bottom: clamp(2rem, 4vw, 2.75rem);
}

.privacy-visual .phone-frame {
    width: min(220px, 60%);
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.privacy-card {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    text-align: left;
}

.privacy-card svg {
    color: var(--mint-dark);
    margin-bottom: 0.9rem;
}

.privacy-card h3 {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.privacy-card p {
    color: var(--ink-secondary);
    font-size: 0.92rem;
}

/* Positioning / not-a-planner */

.positioning {
    text-align: center;
}

.positioning-quote {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    max-width: 30em;
    margin: 0 auto 1.25rem;
    line-height: 1.35;
}

.positioning-note {
    color: var(--ink-secondary);
    max-width: 36em;
    margin: 0 auto;
    font-size: 0.95rem;
}

.compare-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-top: 2.5rem;
    text-align: left;
}

.compare-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    background: var(--background);
}

.compare-card h4 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.compare-card.is-sliverup {
    border-color: var(--mint);
    background: #f2fdfc;
}

.compare-card p {
    color: var(--ink-secondary);
    font-size: 0.9rem;
}

/* CTA / download */

.cta {
    text-align: center;
}

.cta-box {
    background: linear-gradient(135deg, #f2fdfc 0%, #ffffff 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: clamp(2.5rem, 5vw, 3.5rem);
}

.cta-box .btn {
    margin-top: 1.25rem;
}

/* Footer */

.footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    background: var(--background-secondary);
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    font-size: 0.9rem;
    color: var(--ink-secondary);
}

.footer-note {
    font-size: 0.85rem;
    color: var(--ink-secondary);
}

/* ====================================
   Animations
   ==================================== */

.fade-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ====================================
   Responsive
   ==================================== */

@media (max-width: 860px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

    .nav-menu.is-open {
        display: flex;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--background);
        flex-direction: column;
        padding: 1.25rem 1.5rem;
        border-bottom: 1px solid var(--border-color);
        gap: 1rem;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .loop-grid {
        grid-template-columns: 1fr;
    }

    .widget-grid {
        grid-template-columns: 1fr;
    }

    .device-grid {
        grid-template-columns: 1fr;
    }

    .widget-visuals {
        grid-template-columns: 1fr 1fr;
    }

    .privacy-grid {
        grid-template-columns: 1fr;
    }

    .compare-grid {
        grid-template-columns: 1fr;
    }

    .footer .container {
        flex-direction: column;
        text-align: center;
    }
}