/* ===================================
   small talk - Brand Stylesheet
   Based on SmallTalk JP Brand Deck 2026
   =================================== */

/* === BRAND COLORS === */
:root {
    /* Named Brand Palette */
    --sumi-ink: #1C1C1E;        /* Primary dark */
    --ai-indigo: #2D3A4F;       /* Secondary dark */
    --shu-vermillion: #D94F3B;  /* Accent red */
    --kinari-cream: #F5F0E8;    /* Light backgrounds */
    --suna-sand: #C4B9A8;       /* Muted text */
    --matcha: #7A9A6D;          /* Accent green */

    /* Supporting Colors */
    --body-gray: #4A4A4A;       /* Body text */
    --tertiary-gray: #7A7670;   /* Captions */
    --off-white: #FAFAF7;       /* Card backgrounds */
    --pure-white: #FFFFFF;

    /* Typography */
    --font-display: Georgia, 'Times New Roman', serif;
    --font-body: 'Calibri', 'Helvetica Neue', Arial, sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--body-gray);
    background-color: var(--pure-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: normal;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

ul {
    list-style: none;
}

/* === CONTAINER === */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === BUTTONS === */
.btn-primary, .btn-secondary, .btn-primary-small, .btn-plan {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--shu-vermillion);
    color: var(--pure-white);
}

.btn-primary:hover {
    background-color: #C2432F;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(217, 79, 59, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--sumi-ink);
    color: var(--pure-white);
}

.btn-primary-small {
    padding: 10px 24px;
    font-size: 13px;
    background-color: var(--shu-vermillion);
    color: var(--pure-white);
}

.btn-plan {
    width: 100%;
    background-color: var(--shu-vermillion);
    color: var(--pure-white);
    margin-top: var(--spacing-md);
}

.btn-plan:hover {
    background-color: #C2432F;
}

/* === NAVIGATION === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(28, 28, 30, 0.1);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 24px;
    color: var(--sumi-ink);
    font-weight: normal;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    font-size: 14px;
    color: var(--sumi-ink);
    font-weight: 500;
}

.nav-links a:not(.btn-primary-small):hover {
    color: var(--shu-vermillion);
}

/* === SECTION HEADERS === */
.section-header {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.section-label {
    display: block;
    font-family: var(--font-body);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--shu-vermillion);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: 36px;
    color: var(--sumi-ink);
    max-width: 800px;
    margin: 0 auto;
}

/* === HERO SECTION === */
.hero {
    background-color: var(--sumi-ink);
    color: var(--kinari-cream);
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl) 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 52px;
    color: var(--kinari-cream);
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero-subtitle-jp {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--suna-sand);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.hero-description {
    font-size: 14px;
    color: var(--suna-sand);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    max-width: 540px;
}

.launch-badge {
    display: inline-block;
    background-color: rgba(217, 79, 59, 0.15);
    border: 1px solid var(--shu-vermillion);
    border-radius: 6px;
    padding: 12px 20px;
    margin-bottom: var(--spacing-md);
}

.badge-text {
    display: block;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    color: var(--shu-vermillion);
    letter-spacing: 0.5px;
}

.badge-subtext {
    display: block;
    font-size: 11px;
    color: var(--suna-sand);
    margin-top: 4px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.hero-cta .btn-secondary {
    border-color: var(--kinari-cream);
    color: var(--kinari-cream);
}

.hero-cta .btn-secondary:hover {
    background-color: var(--kinari-cream);
    color: var(--sumi-ink);
}

.hero-stat {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 48px;
    color: var(--shu-vermillion);
}

.stat-label {
    font-size: 11px;
    color: var(--suna-sand);
    max-width: 140px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-bubble {
    width: 100%;
    max-width: 400px;
    opacity: 0.9;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* === PILLARS SECTION === */
.pillars {
    background-color: var(--kinari-cream);
    padding: var(--spacing-xl) 0;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.pillar {
    text-align: center;
}

.pillar-title {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--ai-indigo);
    margin-bottom: var(--spacing-sm);
}

.pillar-description {
    font-size: 12px;
    color: var(--body-gray);
    line-height: 1.6;
}

/* === PLANS SECTION === */
.plans {
    background-color: var(--off-white);
    padding: var(--spacing-xl) 0;
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.plan-card {
    background-color: var(--pure-white);
    border-radius: 8px;
    padding: var(--spacing-lg);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid transparent;
}

.plan-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.plan-card.popular {
    border-color: var(--shu-vermillion);
}

.plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--shu-vermillion);
    color: var(--kinari-cream);
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 4px 12px;
    border-radius: 12px;
}

.plan-header {
    margin-bottom: var(--spacing-md);
}

.plan-name {
    font-family: var(--font-display);
    font-size: 24px;
    color: var(--sumi-ink);
    margin-bottom: 4px;
}

.plan-name-jp {
    font-size: 12px;
    color: var(--tertiary-gray);
}

.plan-price {
    margin-bottom: var(--spacing-sm);
}

.price-amount {
    font-family: var(--font-display);
    font-size: 36px;
    color: var(--sumi-ink);
}

.price-period {
    font-size: 13px;
    color: var(--tertiary-gray);
}

.plan-data {
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--ai-indigo);
    margin-bottom: var(--spacing-md);
}

.plan-features {
    margin-bottom: var(--spacing-md);
}

.plan-features li {
    font-size: 13px;
    color: var(--body-gray);
    padding: 8px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-features li::before {
    content: "✓ ";
    color: var(--matcha);
    font-weight: bold;
    margin-right: 8px;
}

.plan-chat, .plan-loud {
    background-color: var(--ai-indigo);
}

.plan-chat .plan-name,
.plan-loud .plan-name,
.plan-chat .price-amount,
.plan-loud .price-amount {
    color: var(--kinari-cream);
}

.plan-chat .plan-data,
.plan-loud .plan-data {
    color: var(--shu-vermillion);
}

.plan-chat .plan-features li,
.plan-loud .plan-features li {
    color: var(--suna-sand);
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.plans-footer {
    text-align: center;
    font-size: 11px;
    color: var(--tertiary-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* === WHY WIN SECTION === */
.why-win {
    background-color: var(--sumi-ink);
    color: var(--kinari-cream);
    padding: var(--spacing-xl) 0;
}

.why-win .section-title {
    color: var(--kinari-cream);
}

.differentiators-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.differentiator {
    padding: var(--spacing-md);
}

.diff-title {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 700;
    color: var(--kinari-cream);
    margin-bottom: var(--spacing-sm);
}

.diff-description {
    font-size: 12px;
    color: var(--suna-sand);
    line-height: 1.7;
}

/* === COVERAGE SECTION === */
.coverage {
    background-color: var(--off-white);
    padding: var(--spacing-xl) 0;
}

.markets-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.market-card {
    background-color: var(--pure-white);
    border-radius: 8px;
    padding: var(--spacing-md);
    position: relative;
    border-left: 4px solid transparent;
}

.market-card.phase-1 {
    border-left-color: var(--shu-vermillion);
}

.market-card.phase-2 {
    border-left-color: var(--matcha);
}

.phase-badge {
    display: inline-block;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: 3px;
    margin-bottom: var(--spacing-sm);
}

.phase-1-badge {
    background-color: var(--shu-vermillion);
    color: var(--kinari-cream);
}

.phase-2-badge {
    background-color: var(--matcha);
    color: var(--kinari-cream);
}

.market-city {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--sumi-ink);
    margin-bottom: 8px;
}

.market-stats {
    font-size: 11px;
    color: var(--shu-vermillion);
    margin-bottom: var(--spacing-sm);
}

.market-description {
    font-size: 12px;
    color: var(--body-gray);
    line-height: 1.6;
}

/* === WAITLIST SECTION === */
.waitlist {
    background-color: var(--kinari-cream);
    padding: var(--spacing-xl) 0;
}

.waitlist-content {
    max-width: 800px;
    margin: 0 auto;
}

.waitlist-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.waitlist-title {
    font-family: var(--font-display);
    font-size: 42px;
    color: var(--sumi-ink);
    margin-bottom: var(--spacing-sm);
}

.waitlist-description {
    font-size: 16px;
    color: var(--body-gray);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

.waitlist-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.benefit {
    background-color: var(--pure-white);
    border-radius: 8px;
    padding: var(--spacing-md);
    text-align: center;
}

.benefit-icon {
    font-size: 32px;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.benefit h4 {
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    color: var(--sumi-ink);
    margin-bottom: 8px;
}

.benefit p {
    font-size: 12px;
    color: var(--body-gray);
    line-height: 1.5;
}

/* Waitlist Form */
.waitlist-form {
    background-color: var(--pure-white);
    border-radius: 12px;
    padding: var(--spacing-lg);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--sumi-ink);
    margin-bottom: 8px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--sumi-ink);
    background-color: var(--off-white);
    border: 2px solid transparent;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    background-color: var(--pure-white);
    border-color: var(--shu-vermillion);
    box-shadow: 0 0 0 3px rgba(217, 79, 59, 0.1);
}

.form-group input::placeholder {
    color: var(--tertiary-gray);
}

.checkbox-group {
    margin-bottom: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--shu-vermillion);
}

.checkbox-label span {
    font-size: 13px;
    color: var(--body-gray);
    line-height: 1.5;
}

.btn-submit {
    width: 100%;
    padding: 16px 32px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 700;
    background-color: var(--shu-vermillion);
    color: var(--pure-white);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background-color: #C2432F;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(217, 79, 59, 0.3);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    background-color: var(--suna-sand);
    cursor: not-allowed;
    transform: none;
}

.form-note {
    text-align: center;
    font-size: 11px;
    color: var(--tertiary-gray);
    margin-top: var(--spacing-sm);
    line-height: 1.5;
}

.form-note a {
    color: var(--shu-vermillion);
    text-decoration: underline;
}

/* Success State */
.waitlist-success {
    background-color: var(--pure-white);
    border-radius: 12px;
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.success-icon {
    width: 60px;
    height: 60px;
    background-color: var(--matcha);
    color: var(--pure-white);
    font-size: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.waitlist-success h3 {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--sumi-ink);
    margin-bottom: var(--spacing-sm);
}

.waitlist-success > p {
    font-size: 14px;
    color: var(--body-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.success-stats {
    background-color: var(--off-white);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.success-position {
    font-family: var(--font-display);
    font-size: 20px;
    color: var(--shu-vermillion);
    margin: 0;
}

.success-share p {
    font-size: 13px;
    color: var(--body-gray);
    margin-bottom: var(--spacing-sm);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.share-btn {
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    background-color: var(--sumi-ink);
    color: var(--kinari-cream);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.share-btn:hover {
    background-color: var(--ai-indigo);
    transform: translateY(-2px);
}

/* === FOOTER === */
.footer {
    background-color: var(--sumi-ink);
    color: var(--suna-sand);
    padding: var(--spacing-xl) 0 var(--spacing-md) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 3fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(245, 240, 232, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-logo {
    width: 40px;
    height: 40px;
}

.footer-brand-name {
    font-family: var(--font-display);
    font-size: 28px;
    color: var(--kinari-cream);
}

.footer-tagline {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--suna-sand);
    font-style: italic;
}

.footer-tagline-jp {
    font-size: 12px;
    color: var(--tertiary-gray);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 700;
    color: var(--kinari-cream);
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    display: block;
    font-size: 12px;
    color: var(--suna-sand);
    margin-bottom: 8px;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: var(--shu-vermillion);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 11px;
    color: var(--tertiary-gray);
    margin-bottom: 8px;
}

.footer-disclaimer {
    font-size: 10px;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        order: -1;
    }

    .hero-bubble {
        max-width: 250px;
    }

    .hero-title {
        font-size: 42px;
    }

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

    .pillars-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

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

    .waitlist-benefits {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .nav-links {
        gap: var(--spacing-sm);
    }

    .nav-links a:not(.btn-primary-small) {
        display: none;
    }

    .hero {
        padding-top: calc(60px + var(--spacing-md));
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .section-title {
        font-size: 28px;
    }

    .waitlist-title {
        font-size: 32px;
    }

    .share-buttons {
        flex-direction: column;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}