/**
 * Layout Styles
 * FundBridge Factoring Theme
 * Modern FinTech Design System
 */

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    /* Primary: Deep Navy Blue - Trust & Expertise */
    --color-primary: #0f2942;
    --color-primary-light: #1a3a5c;
    --color-primary-dark: #091e33;
    --color-primary-50: #e8f0f8;

    /* Accent: Teal/Cyan - Modern & Fresh */
    --color-accent: #00b8d4;
    --color-accent-light: #18ffff;
    --color-accent-dark: #008ba3;
    --color-accent-50: #e0f7fa;

    /* Secondary: Amber - CTA & Action */
    --color-secondary: #f59e0b;
    --color-secondary-light: #fbbf24;
    --color-secondary-dark: #d97706;

    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-info: #3b82f6;

    /* Text */
    --color-text: #1f2937;
    --color-text-light: #4b5563;
    --color-text-muted: #9ca3af;
    --color-text-inverse: #ffffff;

    /* Background */
    --color-bg: #f8fafc;
    --color-bg-white: #ffffff;
    --color-bg-light: #f1f5f9;
    --color-bg-dark: #e2e8f0;

    /* Border */
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0f2942 0%, #1a3a5c 100%);
    --gradient-accent: linear-gradient(135deg, #00b8d4 0%, #0891b2 100%);
    --gradient-cta: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 50%, #f59e0b 100%);
    --gradient-silver: linear-gradient(135deg, #9ca3af 0%, #d1d5db 50%, #9ca3af 100%);
    --gradient-bronze: linear-gradient(135deg, #b45309 0%, #d97706 50%, #b45309 100%);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-blur: blur(10px);

    /* Typography */
    --font-family-base: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Meiryo", sans-serif;

    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows - Minimal for flat design */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 6px 12px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Layout */
    --container-max: 1200px;
    --sidebar-width: 300px;
    --header-height: 70px;
}

/* ========================================
   Base Typography
   ======================================== */
body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Text emphasis (reset.css removes default styling) */
strong,
b {
    font-weight: var(--font-weight-bold);
}

em,
i {
    font-style: italic;
}

/* ========================================
   Container
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.container-narrow {
    max-width: 900px;
}

.container-wide {
    max-width: 1400px;
}

/* ========================================
   Header - Flat Style
   ======================================== */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header.scrolled {
    /* No shadow change on scroll - stay flat */
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* Site Logo */
.site-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.site-logo a {
    color: inherit;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.site-logo a:hover {
    text-decoration: none;
    color: var(--color-primary-light);
}

.site-logo img {
    max-height: 56px;
    width: auto;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    z-index: 101;
}

.menu-toggle:hover {
    background: var(--color-bg-light);
}

.menu-toggle:active {
    background: var(--color-bg-dark);
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay / Scroll Lock */
body.fbf-menu-open {
    overflow: hidden;
}

.fbf-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.48);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
    z-index: 98;
}

body.fbf-menu-open .fbf-menu-overlay {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Navigation */
.main-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.main-nav li {
    list-style: none;
    margin: 0;
    padding: 0;
}

.fbf-mobile-menu-footer {
    display: none;
}

.fbf-mobile-footer-nav {
    display: none;
}

.main-nav a {
    position: relative;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.main-nav a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-accent);
    border-radius: 2px;
    transition: width var(--transition-normal);
}

.main-nav a:hover {
    color: var(--color-accent-dark);
    text-decoration: none;
}

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

.main-nav a.current-menu-item,
.main-nav a[aria-current="page"] {
    color: var(--color-primary);
}

.main-nav a.current-menu-item::after,
.main-nav a[aria-current="page"]::after {
    width: 100%;
    background: var(--gradient-primary);
}

/* ========================================
   Main Content
   ======================================== */
.site-main {
    flex: 1 0 auto;
    padding: var(--spacing-xl) 0;
}

/* Home: remove wasted gap between header and stats bar */
body.home .site-main,
body.front-page .site-main {
    padding-top: 0;
}

/* ========================================
   Page Layout - With Sidebar
   ======================================== */
.page-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.page-layout.has-sidebar {
    grid-template-columns: 1fr var(--sidebar-width);
}

.page-content {
    min-width: 0;
}

.page-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* Sidebar Widgets */
.sidebar-widget {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
}

.sidebar-widget-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-accent);
    color: var(--color-primary);
}

/* ========================================
   Footer (Preserved - Minimal Changes)
   ======================================== */
.site-footer {
    flex-shrink: 0;
    background-color: #2c3e50;
    color: #ffffff;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

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

.footer-logo-column {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.footer-tagline {
    color: #ffffff;
    font-size: var(--font-size-xs);
    line-height: var(--line-height-normal);
    white-space: nowrap;
}

.footer-column-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: #ffffff;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

/* Footer Rankings Section */
.footer-rankings {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-lg);
}

.footer-rankings-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-block;
}

.footer-rankings-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    line-height: 1.8;
}

.footer-rankings-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.footer-rankings-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.footer-rankings-links a:not(:last-child)::after {
    content: "｜";
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.25em;
}

/* Footer Conditions Section */
.footer-conditions {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-lg);
}

.footer-conditions-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-block;
}

.footer-conditions-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    line-height: 1.8;
}

.footer-conditions-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.footer-conditions-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.footer-conditions-links a:not(:last-child)::after {
    content: "｜";
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.25em;
}

/* Footer Prefectures Section */
.footer-prefectures {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-lg);
}

.footer-prefectures-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-block;
}

.footer-prefectures-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    line-height: 1.8;
}

.footer-prefectures-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.footer-prefectures-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.footer-prefectures-links a:not(:last-child)::after {
    content: "｜";
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.25em;
}

/* Footer Media Section */
.footer-media {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-lg);
}

.footer-media-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: inline-block;
}

.footer-media-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    line-height: 1.8;
}

.footer-media-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-xs);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.footer-media-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.footer-media-links a:not(:last-child)::after {
    content: "｜";
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.25em;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.5);
}

.footer-logo {
    display: inline-block;
}

.footer-logo img {
    max-height: 56px;
    width: auto;
}

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb li:not(:last-child)::after {
    content: ">";
    margin-left: var(--spacing-xs);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.breadcrumb a {
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--color-accent-dark);
}

/* ========================================
   Page Title
   ======================================== */
.page-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    line-height: var(--line-height-tight);
}

.page-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-top: calc(var(--spacing-sm) * -1);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   Section
   ======================================== */
.section {
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--color-accent);
    display: table;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-primary);
}

/* ========================================
   Grid
   ======================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

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

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    :root {
        --header-height: 60px;
    }

    .page-layout.has-sidebar {
        grid-template-columns: 1fr;
    }

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

    .footer-logo-column {
        grid-column: 1 / -1;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-base: 0.9375rem;
        --header-height: 56px;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: auto;
        width: min(86vw, 360px);
        background: var(--color-bg-white);
        flex-direction: column;
        padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-lg) calc(var(--spacing-lg) + env(safe-area-inset-bottom));
        gap: var(--spacing-sm);
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        border-left: 1px solid var(--color-border);
        border-top-left-radius: var(--radius-lg);
        border-bottom-left-radius: var(--radius-lg);
        box-shadow: 0 18px 48px rgba(15, 23, 42, 0.22);
        z-index: 99;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .main-nav.active {
        transform: translateX(0);
    }

    /* Primary (top) links inside the drawer only */
    .main-nav > a,
    .main-nav > ul > li > a {
        font-size: var(--font-size-lg);
        font-weight: var(--font-weight-semibold);
        padding: var(--spacing-md) 0;
        color: var(--color-text);
        background: transparent;
        border: none;
        border-bottom: 1px dotted var(--color-border);
        text-decoration-line: underline;
        text-decoration-style: dotted;
        text-decoration-thickness: 1px;
        text-underline-offset: 7px;
        transition: color var(--transition-fast), border-color var(--transition-fast);
    }

    .main-nav > a:active,
    .main-nav > ul > li > a:active {
        color: var(--color-primary);
        border-bottom-color: var(--color-primary);
    }

    .main-nav > a:hover,
    .main-nav > ul > li > a:hover {
        color: var(--color-primary);
        border-bottom-color: var(--color-primary);
    }

    .main-nav > a::after,
    .main-nav > ul > li > a::after {
        display: none;
    }

    .fbf-mobile-menu-footer {
        display: block;
        margin-top: auto;
        padding-top: var(--spacing-md);
        text-align: center;
        border-top: 1px solid var(--color-border-light);
    }

    .fbf-mobile-menu-footer-logo {
        display: flex;
        justify-content: center;
    }

    .fbf-mobile-menu-footer-logo img {
        height: 32px;
        width: auto;
        opacity: 0.85;
        display: block;
    }

    .fbf-mobile-menu-footer-copy {
        margin: 10px auto 0;
        max-width: 22em;
        font-size: var(--font-size-sm);
        line-height: 1.7;
        color: var(--color-text-light);
        letter-spacing: 0.02em;
    }

    /* Footer-like menu blocks inside the mobile drawer */
    .fbf-mobile-footer-nav {
        display: block;
        margin: var(--spacing-lg) calc(var(--spacing-lg) * -1) 0;
        padding: var(--spacing-lg) var(--spacing-lg);
        background-color: #2c3e50;
        color: #ffffff;
    }

    /* Prevent separator "｜" from wrapping to new lines in drawer */
    .main-nav .fbf-mobile-footer-nav .footer-rankings-links,
    .main-nav .fbf-mobile-footer-nav .footer-conditions-links,
    .main-nav .fbf-mobile-footer-nav .footer-prefectures-links,
    .main-nav .fbf-mobile-footer-nav .footer-media-links {
        gap: 0.35em 0.75em;
    }

    .main-nav .fbf-mobile-footer-nav .footer-rankings-links a:not(:last-child)::after,
    .main-nav .fbf-mobile-footer-nav .footer-conditions-links a:not(:last-child)::after,
    .main-nav .fbf-mobile-footer-nav .footer-prefectures-links a:not(:last-child)::after,
    .main-nav .fbf-mobile-footer-nav .footer-media-links a:not(:last-child)::after {
        content: "";
        display: none;
        margin: 0;
    }

    .page-title {
        font-size: var(--font-size-xl);
    }

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

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

    .footer-logo-column {
        grid-column: auto;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 0.875rem;
        --spacing-lg: 20px;
        --spacing-xl: 28px;
    }

    .container {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
}