/* ========================================
   Kikitoru Landing Page - Compact & Cool
   ======================================== */

:root {
    --color-bg: #0a0a0f;
    --color-bg-card: rgba(18, 18, 26, 0.9);
    --color-text: #f0f0f5;
    --color-text-muted: #a0a0af;
    --color-text-dim: #6b6b7b;
    --color-cyan: #00d4ff;
    --color-green: #00ff88;
    --color-purple: #a855f7;
    --color-pink: #ff3366;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-jp: 'Noto Sans JP', sans-serif;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Animated top bar */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-cyan), var(--color-green), var(--color-purple), var(--color-cyan));
    background-size: 300% 100%;
    animation: shimmer 4s linear infinite;
    z-index: 1000;
}

@keyframes shimmer {
    0% { background-position: 100% 0; }
    100% { background-position: -100% 0; }
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ========================================
   Header - Slim & Sticky
   ======================================== */

.header {
    position: sticky;
    top: 2px;
    z-index: 100;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 0.75rem 0;
}

.header-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo { width: 36px; height: 36px; }

.logo-text { display: flex; flex-direction: column; gap: 0; }
.logo-name { font-size: 1.1rem; font-weight: 700; }
.logo-japanese { font-family: var(--font-jp); font-size: 0.65rem; color: var(--color-text-dim); margin-top: -2px; }

.header-cta {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-cyan);
    padding: 0.4rem 0.9rem;
    border: 1px solid rgba(0,212,255,0.4);
    border-radius: 6px;
    transition: all 0.2s;
}
.header-cta:hover {
    background: var(--color-cyan);
    color: var(--color-bg);
    box-shadow: 0 0 20px rgba(0,212,255,0.4);
}

/* ========================================
   Hero - Impactful & Tight
   ======================================== */

.hero {
    position: relative;
    padding: 4rem 0 3rem;
    text-align: center;
    overflow: hidden;
}

/* Animated gradient orbs */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(0,212,255,0.15) 0%, transparent 70%);
    animation: float 8s ease-in-out infinite;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 50%;
    height: 180%;
    background: radial-gradient(ellipse, rgba(0,255,136,0.1) 0%, transparent 70%);
    animation: float 10s ease-in-out infinite reverse;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(30px, -20px) rotate(5deg); }
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero-title {
    font-size: clamp(1.75rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, var(--color-cyan) 50%, var(--color-green) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 5s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-bg);
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    transition: all 0.25s;
    box-shadow: 0 4px 20px rgba(0,212,255,0.3), 0 0 40px rgba(0,212,255,0.1);
}
.hero-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 30px rgba(0,212,255,0.4), 0 0 60px rgba(0,212,255,0.2);
}

/* ========================================
   Section Styles
   ======================================== */

.section-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ========================================
   How It Works - Compact Steps
   ======================================== */

.how-it-works {
    padding: 3rem 0;
    background: linear-gradient(180deg, transparent, rgba(0,212,255,0.03));
}

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

.step {
    text-align: center;
    padding: 1.25rem 1rem;
    background: var(--color-bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    position: relative;
    transition: all 0.25s;
}

.step:hover {
    border-color: rgba(0,212,255,0.2);
    transform: translateY(-2px);
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-bg);
    background: var(--color-cyan);
    border-radius: 50%;
    margin-bottom: 0.75rem;
    box-shadow: 0 0 20px rgba(0,212,255,0.3);
}

.step-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.step-description {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    line-height: 1.4;
}

/* Connecting lines between steps */
.step:not(:last-child)::after {
    content: '→';
    position: absolute;
    top: 50%;
    right: -0.75rem;
    transform: translateY(-50%);
    color: var(--color-cyan);
    font-size: 1rem;
    opacity: 0.5;
}

/* ========================================
   Features - Tight Grid
   ======================================== */

.features {
    padding: 3rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.feature-card {
    padding: 1.25rem;
    background: var(--color-bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 10px;
    transition: all 0.25s;
}

.feature-card:hover {
    border-color: rgba(0,212,255,0.3);
    box-shadow: 0 0 30px rgba(0,212,255,0.1);
    transform: translateY(-3px);
}

.feature-icon {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.feature-description {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    line-height: 1.4;
}

/* ========================================
   KikiTalk - Purple Glow
   ======================================== */

.kikitalk {
    padding: 3rem 0;
    background: linear-gradient(135deg, rgba(168,85,247,0.08) 0%, rgba(0,212,255,0.03) 100%);
    border-top: 1px solid rgba(168,85,247,0.15);
    border-bottom: 1px solid rgba(168,85,247,0.15);
    position: relative;
    overflow: hidden;
}

.kikitalk::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 40%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(168,85,247,0.15) 0%, transparent 60%);
    pointer-events: none;
}

.kikitalk-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.kikitalk-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-purple);
    background: rgba(168,85,247,0.15);
    padding: 0.3rem 0.7rem;
    border-radius: 20px;
    margin-bottom: 0.5rem;
}

.kikitalk-secret {
    font-family: var(--font-jp);
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-bottom: 0.5rem;
}

.kikitalk-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.kikitalk-description {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Chat Demo */
.chat-window {
    background: rgba(10, 10, 15, 0.95);
    border: 1px solid rgba(168,85,247,0.2);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    box-shadow: 0 0 40px rgba(168,85,247,0.1);
}

.chat-message { display: flex; flex-direction: column; gap: 2px; }
.chat-ai { align-items: flex-start; }
.chat-user { align-items: flex-end; }

.chat-label {
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.chat-ai .chat-label { color: var(--color-purple); }
.chat-user .chat-label { color: var(--color-cyan); }

.chat-text {
    font-family: var(--font-jp);
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
}
.chat-ai .chat-text {
    background: rgba(168,85,247,0.15);
    border: 1px solid rgba(168,85,247,0.25);
}
.chat-user .chat-text {
    background: rgba(0,212,255,0.1);
    border: 1px solid rgba(0,212,255,0.2);
}

.chat-correction {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    padding: 0.4rem 0.6rem;
    background: rgba(255,51,102,0.1);
    border: 1px solid rgba(255,51,102,0.2);
    border-radius: 6px;
}

.correction-wrong {
    color: var(--color-pink);
    text-decoration: line-through;
    font-family: var(--font-jp);
}
.correction-arrow { color: var(--color-text-dim); }
.correction-right {
    color: var(--color-green);
    font-weight: 600;
    font-family: var(--font-jp);
}

/* ========================================
   Ownership - Inline Badges
   ======================================== */

.ownership {
    padding: 2.5rem 0;
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: rgba(18,18,26,0.8);
    border: 1px solid rgba(0,255,136,0.1);
    padding: 0.4rem 0.75rem;
    border-radius: 20px;
    transition: all 0.2s;
}

.trust-badge:hover {
    border-color: rgba(0,255,136,0.3);
    background: rgba(0,255,136,0.05);
}

.badge-check {
    color: var(--color-green);
    font-weight: 700;
}

/* ========================================
   Why Creators - Stats Row
   ======================================== */

.why-creators {
    padding: 3rem 0;
    background: linear-gradient(180deg, transparent, rgba(0,255,136,0.02));
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.benefit-card {
    text-align: center;
    padding: 1.25rem 0.75rem;
    background: var(--color-bg-card);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 10px;
    transition: all 0.25s;
}

.benefit-card:hover {
    border-color: rgba(0,255,136,0.3);
    box-shadow: 0 0 25px rgba(0,255,136,0.1);
}

.benefit-stat {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.benefit-title {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.benefit-description {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    line-height: 1.3;
}

/* ========================================
   Footer - Minimal
   ======================================== */

.footer {
    padding: 2.5rem 0 2rem;
    background: rgba(5, 5, 10, 0.9);
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: center;
}

.footer-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-cta { margin-bottom: 1.5rem; }

.footer-cta-button {
    display: inline-block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-bg);
    background: linear-gradient(135deg, var(--color-cyan), var(--color-green));
    padding: 0.75rem 2rem;
    border-radius: 8px;
    transition: all 0.25s;
    box-shadow: 0 4px 25px rgba(0,212,255,0.3);
}
.footer-cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 35px rgba(0,212,255,0.4);
}

.footer-contact { margin-bottom: 1rem; }
.contact-email a {
    font-size: 0.9rem;
    color: var(--color-cyan);
    transition: color 0.2s;
}
.contact-email a:hover { color: var(--color-green); }
.contact-text {
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: 0.25rem;
}

.footer-legal {
    font-size: 0.7rem;
    color: var(--color-text-dim);
    line-height: 1.5;
    opacity: 0.7;
}
.footer-legal strong { color: var(--color-text-muted); }

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

@media (max-width: 900px) {
    .kikitalk-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .kikitalk-demo { order: -1; }
    .chat-window { max-width: 320px; margin: 0 auto; }
}

@media (max-width: 768px) {
    .hero { padding: 3rem 0 2.5rem; }
    .hero-title { font-size: 1.75rem; }

    .steps-grid { grid-template-columns: 1fr; gap: 0.75rem; }
    .step:not(:last-child)::after { display: none; }

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

    .how-it-works, .features, .kikitalk, .why-creators { padding: 2.5rem 0; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; gap: 0.5rem; }

    .trust-badges { flex-direction: column; align-items: center; }
    .trust-badge { width: 100%; max-width: 300px; justify-content: center; }

    .hero-subtitle { font-size: 0.85rem; }
    .section-title { font-size: 1.1rem; }
}

/* ========================================
   Accessibility
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

a:focus-visible, button:focus-visible {
    outline: 2px solid var(--color-cyan);
    outline-offset: 2px;
}

::selection {
    background: rgba(0,212,255,0.3);
    color: var(--color-text);
}