/* ============================================================
   QuickPredict Landing — White & Green Editorial
   Fonts: Instrument Serif (display), Outfit (body), JetBrains Mono (code)
   No gradients. Flat green + white + charcoal with warm amber accent.
   ============================================================ */

:root {
    --white: #ffffff;
    --off-white: #f6faf7;
    --green-50: #ecfdf5;
    --green-100: #d1fae5;
    --green-200: #a7f3d0;
    --green-500: #10b981;
    --green-600: #059669;
    --green-700: #047857;
    --green-800: #065f46;
    --green-900: #064e3b;
    --green-950: #022c22;
    --charcoal: #1a1a1a;
    --gray-500: #6b7280;
    --gray-300: #d1d5db;
    --gray-100: #f3f4f6;
    --amber: #d97706;
    --red: #dc2626;
    --cyan: #0891b2;

    --font-display: "Instrument Serif", Georgia, serif;
    --font-body: "Outfit", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, monospace;

    --max-w: 1120px;
    --radius: 10px;
    --radius-sm: 6px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-body);
    background: var(--white);
    color: var(--charcoal);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
a:focus-visible,
button:focus-visible,
.cmd:focus-visible {
    outline: 3px solid var(--green-500);
    outline-offset: 3px;
}
ul,
ol {
    list-style: none;
}
img,
svg {
    display: block;
    max-width: 100%;
}
code {
    font-family: var(--font-mono);
    font-size: 0.88em;
}
strong {
    font-weight: 600;
}

.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 28px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 12px 22px;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition:
        background 0.15s,
        border-color 0.15s,
        transform 0.1s;
    white-space: nowrap;
}
.btn:active {
    transform: translateY(1px);
}
.btn-lg {
    padding: 14px 28px;
    font-size: 0.95rem;
}
.btn-solid {
    background: var(--green-900);
    color: var(--white);
    border-color: var(--green-900);
}
.btn-solid:hover {
    background: var(--green-800);
    border-color: var(--green-800);
}
.btn-outline {
    background: transparent;
    color: var(--charcoal);
    border-color: var(--gray-300);
}
.btn-outline:hover {
    border-color: var(--green-600);
    color: var(--green-800);
}

/* ---------- Nav ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-300);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--green-900);
}
.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--green-50);
    border: 1px solid var(--green-200);
    border-radius: 6px;
    color: var(--green-600);
}
.nav-links {
    display: flex;
    gap: 32px;
}
.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-500);
    transition: color 0.15s;
    position: relative;
}
.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--green-600);
    transition: width 0.2s;
}
.nav-links a:hover {
    color: var(--green-800);
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--charcoal);
    border-radius: 1px;
}

/* ---------- Hero ---------- */
.hero {
    padding: 80px 0 60px;
    border-bottom: 1px solid var(--green-100);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
    align-items: center;
}
.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--green-700);
    background: var(--green-50);
    border: 1px solid var(--green-200);
    padding: 6px 14px;
    border-radius: 100px;
}
.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--green-500);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.4;
    }
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.6rem, 5.5vw, 3.8rem);
    font-weight: 400;
    line-height: 1.1;
    margin: 24px 0 20px;
    color: var(--green-950);
}
.hero h1 em {
    font-style: italic;
    color: var(--green-700);
}
.lede {
    font-size: 1.1rem;
    color: var(--gray-500);
    max-width: 520px;
    font-weight: 400;
}
.hero-ctas {
    display: flex;
    gap: 14px;
    margin-top: 32px;
    flex-wrap: wrap;
}

/* ---------- Phone mock ---------- */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}
.phone {
    width: 100%;
    max-width: 340px;
    background: var(--white);
    border: 2px solid var(--green-200);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    z-index: 2;
}
.phone-decoration {
    position: absolute;
    top: 20px;
    right: -16px;
    bottom: 20px;
    left: 16px;
    background: var(--green-50);
    border: 1px solid var(--green-100);
    border-radius: 20px;
    z-index: 1;
}
.phone-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--green-900);
    color: var(--white);
}
.phone-avatar {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-700);
    border-radius: 50%;
    color: var(--green-100);
}
.phone-meta {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}
.phone-title {
    font-weight: 600;
    font-size: 0.88rem;
}
.phone-sub {
    font-size: 0.72rem;
    opacity: 0.7;
}
.phone-chat {
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--off-white);
    min-height: 280px;
    max-height: 340px;
    overflow-y: auto;
    scroll-behavior: smooth;
}
.bubble {
    max-width: 88%;
    padding: 10px 13px;
    border-radius: 12px;
    font-size: 0.84rem;
}
.bubble.user {
    align-self: flex-end;
    background: var(--green-900);
    color: var(--white);
    border-bottom-right-radius: 4px;
}
.bubble.user code {
    color: var(--green-100);
    font-size: 0.82rem;
}
.bubble.bot {
    align-self: flex-start;
    background: var(--white);
    border: 1px solid var(--green-200);
    border-bottom-left-radius: 4px;
    color: var(--charcoal);
}
.bubble-header {
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--green-700);
    margin-bottom: 4px;
}
.bubble-asset {
    font-weight: 600;
    font-size: 0.88rem;
}
.bubble-expiry {
    font-size: 0.72rem;
    color: var(--gray-500);
    margin-top: 2px;
}
.bubble-data {
    margin: 8px 0;
    display: grid;
    gap: 3px;
}
.bubble-data > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.bubble-data span {
    color: var(--gray-500);
    font-size: 0.76rem;
}
.bubble-data strong {
    font-size: 0.78rem;
    font-weight: 600;
}
.bubble-data .profit {
    color: var(--green-700);
}
.bubble-ai {
    font-size: 0.72rem;
    color: var(--gray-500);
    border-top: 1px solid var(--green-100);
    padding-top: 6px;
    margin-top: 4px;
    font-style: italic;
}
.bubble-actions {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}
.kb-confirm,
.kb-cancel {
    flex: 1;
    text-align: center;
    padding: 6px 0;
    border-radius: var(--radius-sm);
    font-size: 0.76rem;
    font-weight: 600;
}
.kb-confirm {
    background: var(--green-50);
    color: var(--green-700);
    border: 1px solid var(--green-200);
}
.kb-cancel {
    background: var(--gray-100);
    color: var(--gray-500);
    border: 1px solid var(--gray-300);
}

/* ---------- Demo typing indicator ---------- */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 10px 14px;
    align-self: flex-start;
    background: var(--white);
    border: 1px solid var(--green-200);
    border-radius: 12px;
    border-bottom-left-radius: 4px;
}
.typing-indicator span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green-500);
    animation: typing-bounce 1.2s infinite;
}
.typing-indicator span:nth-child(2) {
    animation-delay: 0.15s;
}
.typing-indicator span:nth-child(3) {
    animation-delay: 0.3s;
}
@keyframes typing-bounce {
    0%,
    60%,
    100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* Demo message animation */
.phone-chat .bubble,
.phone-chat .typing-indicator {
    animation: msg-in 0.3s ease forwards;
}
@keyframes msg-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Confirm button flash */
.kb-confirm.active {
    background: var(--green-600);
    color: var(--white);
    border-color: var(--green-600);
}

.ticker {
    padding: 16px 0;
    background: var(--green-900);
    color: var(--green-100);
    overflow: hidden;
}
.ticker-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    font-weight: 500;
}
.ticker-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.ticker-item svg {
    flex-shrink: 0;
}
.ticker-sep {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--green-500);
    flex-shrink: 0;
}

/* ---------- Problem ---------- */
.problem {
    padding: 56px 0;
}
.problem blockquote {
    max-width: 700px;
    border-left: 4px solid var(--green-500);
    padding-left: 24px;
}
.problem blockquote p {
    font-family: var(--font-display);
    font-size: 1.4rem;
    line-height: 1.4;
    color: var(--green-950);
}
.problem blockquote p + p {
    margin-top: 12px;
}
.problem blockquote em {
    font-style: italic;
    color: var(--green-700);
}

/* ---------- Section Headers ---------- */
.section-header {
    margin-bottom: 48px;
}
.section-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--green-600);
    background: var(--green-50);
    border: 1px solid var(--green-200);
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: 16px;
}
.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 400;
    line-height: 1.15;
    color: var(--green-950);
}
.section-header h2 em {
    font-style: italic;
    color: var(--green-700);
}
.section-desc {
    color: var(--gray-500);
    margin-top: 10px;
    font-size: 1rem;
}

/* ---------- Features ---------- */
.features {
    padding: 80px 0;
    background: var(--off-white);
    border-top: 1px solid var(--green-100);
    border-bottom: 1px solid var(--green-100);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--green-200);
    border: 1px solid var(--green-200);
    border-radius: var(--radius);
    overflow: hidden;
}
.feature-card {
    background: var(--white);
    padding: 32px 28px;
    transition: background 0.15s;
}
.feature-card:hover {
    background: var(--green-50);
}
.feature-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border: 1px solid var(--green-200);
    border-radius: 8px;
    color: var(--green-600);
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--green-950);
}
.feature-card p {
    font-size: 0.92rem;
    color: var(--gray-500);
    line-height: 1.5;
}
.feature-card code {
    background: var(--green-50);
    color: var(--green-800);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.82em;
}

/* ---------- How ---------- */
.how {
    padding: 80px 0;
}
.steps {
    max-width: 640px;
}
.step {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 24px;
}
.step-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.step-num {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    background: var(--green-900);
    color: var(--white);
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 50%;
    flex-shrink: 0;
}
.step-line {
    width: 2px;
    flex: 1;
    background: var(--green-200);
    margin: 8px 0;
}
.step-content {
    padding-bottom: 40px;
}
.step:last-child .step-content {
    padding-bottom: 0;
}
.step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--green-950);
    margin-bottom: 10px;
}
.step-code {
    background: var(--green-950);
    color: var(--green-200);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    overflow-x: auto;
}
.step-code code {
    color: inherit;
    font-size: inherit;
}
.step-content p {
    color: var(--gray-500);
    font-size: 0.95rem;
}
.step-content code {
    background: var(--green-50);
    color: var(--green-800);
    padding: 1px 5px;
    border-radius: 3px;
}

/* ---------- Commands ---------- */
.commands {
    padding: 80px 0;
    background: var(--off-white);
    border-top: 1px solid var(--green-100);
    border-bottom: 1px solid var(--green-100);
}
.cmd-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.cmd-block h3 {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--green-700);
    margin-bottom: 10px;
    padding-left: 2px;
}
.cmd-list {
    background: var(--white);
    border: 1px solid var(--green-200);
    border-radius: var(--radius);
    overflow: hidden;
}
.cmd {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--green-100);
    cursor: pointer;
    transition: background 0.12s;
    gap: 12px;
}
.cmd:focus-visible {
    position: relative;
    z-index: 1;
    background: var(--green-50);
}
.cmd:last-child {
    border-bottom: 0;
}
.cmd:hover {
    background: var(--green-50);
}
.cmd-name code {
    color: var(--green-800);
    font-size: 0.84rem;
    font-weight: 500;
}
.cmd-desc {
    font-size: 0.82rem;
    color: var(--gray-500);
    text-align: right;
    flex-shrink: 0;
}

/* ---------- Security ---------- */
.security {
    padding: 80px 0;
}
.security-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    align-items: start;
}
.security-main {
    display: grid;
    gap: 20px;
}
.sec-row {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 16px;
    align-items: start;
    padding: 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition:
        border-color 0.15s,
        background 0.15s;
}
.sec-row:hover {
    background: var(--green-50);
    border-color: var(--green-200);
}
.sec-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border: 1px solid var(--green-200);
    border-radius: 8px;
    color: var(--green-600);
    flex-shrink: 0;
}
.sec-row strong {
    display: block;
    margin-bottom: 2px;
    color: var(--green-950);
    font-size: 0.95rem;
}
.sec-row p {
    color: var(--gray-500);
    font-size: 0.9rem;
}
.sec-row code {
    background: var(--green-50);
    color: var(--green-800);
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.82em;
}
.security-sidebar {
    display: grid;
    gap: 16px;
    position: sticky;
    top: 88px;
}
.sidebar-card {
    background: var(--green-50);
    border: 1px solid var(--green-200);
    border-radius: var(--radius);
    padding: 20px;
}
.sidebar-card h4 {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--green-900);
    margin-bottom: 8px;
}
.sidebar-card p {
    font-size: 0.88rem;
    color: var(--gray-500);
}
.sidebar-card ul {
    margin-top: 8px;
    display: grid;
    gap: 6px;
}
.sidebar-card li {
    font-size: 0.85rem;
    color: var(--gray-500);
    padding-left: 16px;
    position: relative;
}
.sidebar-card li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green-500);
}

/* ---------- Final CTA ---------- */
.final-cta {
    padding: 80px 0;
}
.cta-box {
    background: var(--green-900);
    color: var(--white);
    padding: 56px 48px;
    border-radius: var(--radius);
    text-align: center;
}
.cta-box h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 400;
    margin-bottom: 12px;
}
.cta-box p {
    color: var(--green-200);
    margin-bottom: 24px;
    font-size: 1.05rem;
}
.cta-box code {
    background: var(--green-800);
    color: var(--green-100);
    padding: 2px 8px;
    border-radius: 4px;
}
.cta-box .btn-solid {
    background: var(--white);
    color: var(--green-900);
    border-color: var(--white);
}
.cta-box .btn-solid:hover {
    background: var(--green-50);
    border-color: var(--green-50);
}

/* ---------- Footer ---------- */
.footer {
    background: var(--off-white);
    border-top: 1px solid var(--green-100);
    padding: 40px 0 24px;
}
.footer-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--green-200);
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--green-900);
    margin-bottom: 6px;
}
.footer-left p {
    color: var(--gray-500);
    font-size: 0.88rem;
}
.footer-right {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}
.footer-right a {
    font-size: 0.88rem;
    color: var(--gray-500);
    font-weight: 500;
    transition: color 0.15s;
}
.footer-right a:hover {
    color: var(--green-700);
}
.footer-bottom {
    padding-top: 20px;
    text-align: center;
}
.footer-bottom span {
    font-size: 0.78rem;
    color: var(--gray-500);
}

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: var(--green-900);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition:
        opacity 0.2s,
        transform 0.2s;
    z-index: 100;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero-visual {
        order: -1;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .security-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .security-sidebar {
        position: static;
    }
    .cmd-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }
    .nav-cta {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-links.open {
        display: flex;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--white);
        border-bottom: 1px solid var(--green-200);
        padding: 16px 28px;
        gap: 4px;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    }
    .nav-links.open a {
        padding: 12px 0;
        border-bottom: 1px solid var(--green-100);
    }
    .nav-links.open a:last-child {
        border-bottom: 0;
    }
    .nav-links.open a::after {
        display: none;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .hero {
        padding: 48px 0 40px;
    }
    .features,
    .how,
    .commands,
    .security,
    .final-cta {
        padding: 56px 0;
    }
    .hero-ctas {
        flex-direction: column;
    }
    .hero-ctas .btn {
        width: 100%;
        justify-content: center;
    }
    .cta-box {
        padding: 36px 24px;
    }
    .step {
        grid-template-columns: 32px 1fr;
        gap: 16px;
    }
    .step-num {
        width: 28px;
        height: 28px;
        font-size: 0.75rem;
    }
    .cmd {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    .cmd-desc {
        text-align: left;
    }
    .footer-inner {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
        scroll-behavior: auto !important;
    }
}