/* ====================================
   TOMORROWPROOF - Podcast Studio Lab
   Minimalist Design System
   ==================================== */

/* ====================================
   CSS Variables
   ==================================== */
:root {
    /* Colors */
    --color-primary: #1A1A1A;
    --color-bg: #FAFAFA;
    --color-bg-alt: #FFFFFF;
    --color-text: #1A1A1A;
    --color-text-secondary: #666666;
    --color-border: #E5E5E5;
    --color-accent: #0066FF;
    --color-accent-hover: #0052CC;
    
    /* Typography */
    --font-sans: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    --font-inter: 'Inter', sans-serif;
    
    /* Spacing */
    --container-padding: 2rem;
    --section-spacing: 8rem;
    --section-spacing-mobile: 4rem;
    
    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

/* ====================================
   Base Styles
   ==================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ====================================
   Header
   ==================================== */
.studio-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(250, 250, 250, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: 1.5rem 0;
}

.studio-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.header-brand {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.brand-logo {
    font-family: var(--font-inter);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.brand-logo:hover {
    opacity: 0.7;
}

.brand-subtitle {
    font-family: var(--font-inter);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.header-nav {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-family: var(--font-inter);
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.3s ease;
    letter-spacing: 0.02em;
}

.nav-link:hover {
    color: var(--color-accent);
}

.inquiry-link {
    padding: 0.625rem 1.5rem;
    background-color: var(--color-primary);
    color: var(--color-bg);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.inquiry-link:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ====================================
   Hero Section
   ==================================== */
.hero-studio {
    position: relative;
    padding: calc(var(--header-height) + 6rem) 0 6rem;
    min-height: 85vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.4;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 7px, #E5E5E5 7px, #E5E5E5 8px),
        repeating-linear-gradient(90deg, transparent, transparent 7px, #E5E5E5 7px, #E5E5E5 8px);
    background-size: 8px 8px;
    pointer-events: none;
}

.hero-label {
    font-family: var(--font-inter);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.hero-statement {
    font-family: var(--font-serif);
    font-size: 4rem;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-bottom: 2rem;
}

.hero-manifesto {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    line-height: 2;
    color: var(--color-text-secondary);
    max-width: 700px;
}

/* ====================================
   Section Styles
   ==================================== */
section {
    padding: var(--section-spacing) 0;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.section-intro {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--color-text-secondary);
    margin-bottom: 4rem;
}

/* ====================================
   Concept Section
   ==================================== */
.concept-section {
    background-color: var(--color-bg-alt);
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.concept-card {
    padding: 2.5rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.concept-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary);
}

.concept-number {
    font-family: var(--font-inter);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

.concept-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.concept-desc {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
}

/* ====================================
   Pain Section
   ==================================== */
.pain-section {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

.pain-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-bg);
    margin-bottom: 3rem;
    text-align: center;
}

.pain-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.pain-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.pain-icon {
    font-family: monospace;
    font-size: 1.5rem;
    color: var(--color-accent);
}

.pain-text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-bg);
}

.pain-solution {
    font-size: 1.125rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ====================================
   Services Section
   ==================================== */
.services-flow {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.service-step {
    padding: 3rem;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.4s ease;
}

.service-step:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.08);
}

.step-number {
    font-family: var(--font-inter);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.step-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.step-subtitle {
    display: block;
    font-family: var(--font-inter);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-top: 0.5rem;
    letter-spacing: 0.05em;
}

.step-desc {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--color-text-secondary);
    margin-top: 1.5rem;
}

.step-desc strong {
    color: var(--color-primary);
    font-weight: 600;
}

/* ====================================
   Format Section
   ==================================== */
.format-section {
    background-color: var(--color-bg-alt);
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.format-card {
    padding: 2.5rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.format-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.format-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.format-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.format-desc {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.format-example {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 500;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* ====================================
   Works Section
   ==================================== */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.work-item {
    padding: 2.5rem;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    position: relative;
}

.work-item-locked {
    filter: blur(3px);
    opacity: 0.6;
    pointer-events: none;
}

.work-category {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.work-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.6;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

.work-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.work-format,
.work-episodes {
    padding: 0.5rem 1rem;
    background-color: var(--color-bg);
    border-radius: 4px;
}

.work-locked-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--color-primary);
    color: var(--color-bg);
    padding: 1rem 2rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 10;
    filter: none;
    opacity: 1;
    white-space: nowrap;
}

/* ====================================
   Pricing Section
   ==================================== */
.pricing-section {
    background-color: var(--color-bg-alt);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.pricing-card {
    padding: 3rem 2.5rem;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    position: relative;
    transition: all 0.4s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}

.pricing-card-featured {
    border: 2px solid var(--color-accent);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.12);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background-color: var(--color-accent);
    color: var(--color-bg);
    padding: 0.375rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.pricing-plan {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.pricing-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.pricing-amount {
    font-family: var(--font-inter);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.9375rem;
}

.pricing-features li:before {
    content: "✓ ";
    color: var(--color-accent);
    font-weight: 600;
    margin-right: 0.5rem;
}

.pricing-note {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* ====================================
   CTA Section
   ==================================== */
.cta-section {
    background-color: var(--color-primary);
    color: var(--color-bg);
    text-align: center;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-bg);
    margin-bottom: 1.5rem;
}

.cta-message {
    font-size: 1.125rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 3rem;
    background-color: var(--color-accent);
    color: var(--color-bg);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    min-height: 56px;
}

.cta-button-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
}

.cta-button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 3rem;
    background-color: transparent;
    color: var(--color-bg);
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    min-height: 56px;
}

.cta-button-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ====================================
   Footer
   ==================================== */
.studio-footer {
    background-color: var(--color-primary);
    color: var(--color-bg);
    padding: 3rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.studio-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

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

.footer-logo {
    font-family: var(--font-inter);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    letter-spacing: 0.05em;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
        --section-spacing: 4rem;
    }
    
    /* Header */
    .studio-header {
        padding: 1rem 0;
    }
    
    .header-brand {
        flex-direction: column;
        gap: 0.125rem;
        align-items: flex-start;
    }
    
    .brand-logo {
        font-size: 1rem;
    }
    
    .brand-subtitle {
        font-size: 0.625rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-bg-alt);
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 6rem 2rem 2rem;
        box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 999;
    }
    
    .header-nav.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1rem;
        padding: 1rem 0;
        width: 100%;
        border-bottom: 1px solid var(--color-border);
        display: block;
    }
    
    .inquiry-link {
        margin-top: 1rem;
        padding: 1rem 1.5rem;
        width: 100%;
        text-align: center;
        display: block;
    }
    
    /* Hero */
    .hero-studio {
        padding: calc(var(--header-height) + 3rem) 0 3rem;
        min-height: 70vh;
    }
    
    .hero-statement {
        font-size: 2.25rem;
        line-height: 1.3;
    }
    
    .hero-manifesto {
        font-size: 1.125rem;
        line-height: 2;
    }
    
    /* Section Titles */
    .section-title {
        font-size: 1.875rem;
        line-height: 1.4;
    }
    
    .section-intro {
        font-size: 1rem;
        line-height: 2;
        margin-bottom: 3rem;
    }
    
    /* Concept Grid */
    .concept-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .concept-card {
        padding: 2rem;
    }
    
    /* Pain Section */
    .pain-title {
        font-size: 1.875rem;
        line-height: 1.4;
    }
    
    .pain-text {
        font-size: 1rem;
    }
    
    .pain-solution {
        font-size: 1rem;
    }
    
    /* Services */
    .service-step {
        padding: 2rem;
    }
    
    .step-title {
        font-size: 1.5rem;
    }
    
    /* Format Grid */
    .format-grid {
        grid-template-columns: 1fr;
    }
    
    /* Works Grid */
    .works-grid {
        grid-template-columns: 1fr;
    }
    
    /* Pricing Grid */
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-amount {
        font-size: 2rem;
    }
    
    /* CTA */
    .cta-title {
        font-size: 1.875rem;
        line-height: 1.4;
    }
    
    .cta-message {
        font-size: 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta-button-primary,
    .cta-button-secondary {
        width: 100%;
    }
    
    /* Footer */
    .footer-links {
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-statement {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.625rem;
    }
    
    .pain-title,
    .cta-title {
        font-size: 1.625rem;
    }
}

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

.reveal {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

.reveal.active {
    animation-play-state: running;
}