/* ============================
   Kairokume — Design System
   ============================ */

:root {
    --color-primary: #1a6b5a;
    --color-primary-dark: #145a4b;
    --color-primary-light: #e8f5f0;
    --color-accent: #e6a817;
    --color-accent-hover: #d49b10;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafb;
    --color-bg-dark: #0f3d32;
    --color-text: #1a1a2e;
    --color-text-muted: #6b7280;
    --color-text-light: #9ca3af;
    --color-border: #e5e7eb;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-card: 0 2px 12px rgba(26,107,90,0.06);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   Reset & Base
   ============================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ============================
   Layout
   ============================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================
   Navigation
   ============================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 36px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 100px;
    transition: var(--transition);
}

.btn-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26,107,90,0.3);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}

/* ============================
   Buttons
   ============================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 100px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-text);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230,168,23,0.35);
}

.btn-secondary {
    background: var(--color-text);
    color: var(--color-white);
}

.btn-secondary:hover {
    background: #2d2d44;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline-white {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline-white:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

/* ============================
   Hero Section
   ============================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 60%, #0b2e26 100%);
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.3), transparent);
    top: -100px;
    right: -150px;
    animation: float 20s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(230,168,23,0.4), transparent);
    bottom: -100px;
    left: -100px;
    animation: float 15s ease-in-out infinite reverse;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.2), transparent);
    top: 50%;
    right: 20%;
    animation: float 25s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.hero-content {
    max-width: 600px;
}

.hero-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    max-width: 480px;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============================
   Sections
   ============================ */
.section {
    padding: 100px 0;
}

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

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
    margin-bottom: 48px;
    line-height: 1.2;
}

/* ============================
   Service Cards
   ============================ */
.cards-grid {
    display: grid;
    gap: 24px;
}

.cards-4 {
    grid-template-columns: repeat(4, 1fr);
}

.cards-3 {
    grid-template-columns: repeat(3, 1fr);
}

.cards-2 {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.service-card:hover::before {
    opacity: 1;
}

.card-highlight {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-card);
}

.card-highlight::before {
    opacity: 1;
}

.highlight-badge {
    position: absolute;
    top: 16px;
    right: -32px;
    background: var(--color-accent);
    color: var(--color-text);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 40px;
    transform: rotate(45deg);
    letter-spacing: 0.05em;
}

.card-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.card-price {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.price-addon {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.card-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.detail-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.detail-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
}

.card-note {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px dashed var(--color-border);
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* ============================
   Ads / Pricing Tables
   ============================ */
.ads-block {
    margin-bottom: 56px;
}

.ads-block:last-child {
    margin-bottom: 0;
}

.ads-header {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 24px;
}

.ads-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
}

.ads-subtitle {
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-style: italic;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-white);
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.pricing-table thead {
    background: var(--color-bg-alt);
}

.pricing-table th {
    padding: 16px 24px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.pricing-table td {
    padding: 18px 24px;
    font-size: 0.9rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.pricing-table tr:last-child td {
    border-bottom: none;
}

.pricing-table tbody tr {
    transition: var(--transition);
}

.pricing-table tbody tr:hover {
    background: var(--color-primary-light);
}

.price-cell {
    font-weight: 700;
    color: var(--color-primary) !important;
}

/* ============================
   Automation Section
   ============================ */
.automation-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.automation-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    transition: var(--transition);
}

.automation-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.auto-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.automation-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.automation-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* ============================
   CTA / Contact Section
   ============================ */
.section-cta {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg-dark) 100%);
    text-align: center;
    padding: 100px 0;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================
   Footer
   ============================ */
.footer {
    background: #0a0a14;
    padding: 64px 0 32px;
    color: rgba(255,255,255,0.6);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: 16px;
    font-size: 1.25rem;
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 300px;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
}

/* ============================
   Animations
   ============================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================
   Responsive Design
   ============================ */
@media (max-width: 1024px) {
    .cards-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        display: flex;
    }

    .btn-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section {
        padding: 72px 0;
    }

    .cards-3,
    .cards-4 {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .hero-buttons .btn {
        text-align: center;
        justify-content: center;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .ads-header {
        flex-direction: column;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .card-price {
        font-size: 1.5rem;
    }

    .nav-container {
        padding: 0 16px;
    }

    .container {
        padding: 0 16px;
    }
}