/* ========================================
   IPPO MEDI PRO - Recruiter Landing Page
   WHOM-inspired Design with Blue Accent
   ======================================== */

/* ========================================
   1. CSS Variables
   ======================================== */
:root {
    /* Colors - Blue Accent */
    --color-primary: #007BFF;
    --color-primary-light: #3395FF;
    --color-primary-dark: #0056B3;
    --color-white: #FFFFFF;
    --color-black: #1A1A1A;
    --color-text-primary: #333333;
    --color-text-secondary: #6B7280;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-border: #E5E7EB;
    --color-shadow: rgba(0, 0, 0, 0.08);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;
    
    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 9999px;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.15s ease;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-white);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
}

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

/* ========================================
   3. Container & Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-gray {
    background-color: var(--color-gray-50);
}

/* ========================================
   4. Typography
   ======================================== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.section-description p {
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   5. Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius-full);
    transition: var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 8px 24px rgba(0, 123, 255, 0.45);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.625rem 1.5rem;
    font-size: 0.938rem;
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-xlarge {
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
}

/* ========================================
   6. Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition-base);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.5px;
}

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

.nav-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    border-right: 1px solid var(--color-gray-300);
}

.nav-link {
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--color-text-primary);
    transition: var(--transition-base);
}

.nav-link-main {
    font-size: 1rem;
    font-weight: 600;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-text-primary);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    z-index: 999;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    transform: translateY(0);
}

.mobile-menu-link {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    font-weight: 500;
    transition: var(--transition-fast);
}

.mobile-menu-link:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
}

.mobile-menu-cta {
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    margin: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: none;
}

/* ========================================
   7. Hero Section
   ======================================== */
.hero {
    padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, #F0F8FF 0%, #E8F4FF 100%);
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.hero-brand {
    color: var(--color-primary);
    display: block;
    margin-top: var(--spacing-xs);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.hero-cta {
    margin-bottom: var(--spacing-md);
}

.hero-caption {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
}

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

.hero-image-placeholder {
    width: 100%;
    height: 400px;
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px var(--color-shadow);
    text-align: center;
    padding: var(--spacing-xl);
}

.hero-image-placeholder i {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero-image-placeholder p {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.hero-image-photo {
    width: 100%;
    height: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: var(--border-radius-xl);
    box-shadow: 0 8px 24px var(--color-shadow);
}

/* ========================================
   8. Professional Section
   ======================================== */
.professional-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.professional-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    text-align: center;
    transition: var(--transition-base);
}

.professional-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow);
}

.professional-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.professional-avatar i {
    font-size: 2rem;
    color: var(--color-white);
}

.professional-name {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.professional-role {
    font-size: 0.938rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.professional-desc {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   9. Category Section
   ======================================== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.category-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    transition: var(--transition-base);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow);
}

.category-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--border-radius-md);
    background: linear-gradient(135deg, #E8F4FF 0%, #D3ECFF 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.category-icon i {
    font-size: 1.75rem;
    color: var(--color-primary);
}

.category-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.category-desc {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   10. WorkStyle Section
   ======================================== */
.workstyle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.workstyle-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    text-align: center;
    transition: var(--transition-base);
}

.workstyle-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow);
}

.workstyle-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.workstyle-icon i {
    font-size: 2rem;
    color: var(--color-white);
}

.workstyle-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.workstyle-desc {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   11. Case Study Carousel
   ======================================== */
.case-carousel {
    position: relative;
}

.carousel-container {
    display: flex;
    gap: var(--spacing-xl);
    overflow-x: auto;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.carousel-container::-webkit-scrollbar {
    display: none;
}

.case-card {
    flex: 0 0 calc(33.333% - var(--spacing-lg));
    min-width: 320px;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    scroll-snap-align: start;
}

.case-number {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: var(--border-radius-full);
    margin-bottom: var(--spacing-md);
}

.case-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.case-desc {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.case-result {
    display: flex;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.case-result-item {
    flex: 1;
    text-align: center;
}

.case-result-label {
    display: block;
    font-size: 0.813rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.case-result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.carousel-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.carousel-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    cursor: pointer;
}

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

/* ========================================
   12. Flow Section
   ======================================== */
.flow-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.flow-item {
    text-align: center;
    max-width: 150px;
    flex: 0 0 auto;
}

.flow-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.3);
    flex-shrink: 0;
}

.flow-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-white);
}

.flow-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.flow-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--color-gray-300);
    margin-top: 40px;
    flex-shrink: 0;
}

/* ========================================
   13. Support Section
   ======================================== */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.support-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 4px 16px var(--color-shadow);
    text-align: center;
}

.support-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--border-radius-md);
    background: linear-gradient(135deg, #E8F4FF 0%, #D3ECFF 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.support-icon i {
    font-size: 2rem;
    color: var(--color-primary);
}

.support-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-sm);
}

.support-desc {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   14. FAQ Section
   ======================================== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: 0 2px 8px var(--color-shadow);
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: var(--transition-base);
}

.faq-question:hover {
    background-color: var(--color-gray-50);
}

.faq-q {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.faq-question h3 {
    flex: 1;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-black);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--color-primary);
    transition: var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-item.active .faq-answer {
    display: flex;
    gap: var(--spacing-md);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-a {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-gray-200);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.faq-answer p {
    flex: 1;
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ========================================
   15. CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, #F0F8FF 0%, #E8F4FF 100%);
    text-align: center;
}

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

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-black);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.cta-note {
    margin-top: var(--spacing-md);
    font-size: 0.938rem;
    color: var(--color-text-secondary);
}

/* ========================================
   16. Footer
   ======================================== */
.footer {
    background-color: var(--color-gray-100);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: 0.938rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-company {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.footer-nav-title {
    font-size: 0.938rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-md);
}

.footer-link {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    transition: var(--transition-base);
}

.footer-link:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-300);
    text-align: center;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* ========================================
   17. Animation Classes
   ======================================== */
.fade-in {
    opacity: 0;
    animation: fadeInAnimation 1s ease forwards;
}

@keyframes fadeInAnimation {
    to {
        opacity: 1;
    }
}

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

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

/* Delay variations */
.fade-in-up[data-delay="0"] { transition-delay: 0s; }
.fade-in-up[data-delay="50"] { transition-delay: 0.05s; }
.fade-in-up[data-delay="100"] { transition-delay: 0.1s; }
.fade-in-up[data-delay="150"] { transition-delay: 0.15s; }
.fade-in-up[data-delay="200"] { transition-delay: 0.2s; }
.fade-in-up[data-delay="250"] { transition-delay: 0.25s; }
.fade-in-up[data-delay="300"] { transition-delay: 0.3s; }
.fade-in-up[data-delay="350"] { transition-delay: 0.35s; }
.fade-in-up[data-delay="400"] { transition-delay: 0.4s; }
.fade-in-up[data-delay="450"] { transition-delay: 0.45s; }
.fade-in-up[data-delay="500"] { transition-delay: 0.5s; }

/* ========================================
   18. Utility Classes
   ======================================== */
.sp-only {
    display: none;
}

/* ========================================
   19. Responsive Design
   ======================================== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .nav-main {
        gap: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .nav-link-main {
        font-size: 0.875rem;
    }
    
    .btn-sm {
        font-size: 0.875rem;
        padding: 0.625rem 1.25rem;
    }
    
    .flow-container {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero {
        padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-image-placeholder {
        height: 300px;
    }
    
    .professional-grid,
    .category-grid,
    .workstyle-grid,
    .support-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card {
        flex: 0 0 90%;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .sp-only {
        display: inline;
    }
}