/* ===========================
   COLOR PALETTE & VARIABLES
   =========================== */

:root {
    /* Color Palette (Blue Theme) */
    --ocean-blue: #3498db;      /* メインの鮮やかな青 (先生の指示色) */
    --deep-navy: #2c3e50;       /* 暗めの紺色 (文字やサブカラー) */
    --sky-blue: #87ceeb;        /* 明るい空色 (アクセント) */
    --pale-water: #f0f8ff;      /* とても薄い水色 (背景用) */
    
    /* Functional Colors */
    --primary: var(--sky-blue);  /* メインカラー */
    --secondary: var(--deep-navy); /* サブカラー */
    --accent: var(--sky-blue);     /* 強調したい部分 */
    --dark: var(--deep-navy);      /* 見出しの文字色 */
    --light: var(--pale-water);    /* 薄い背景色 */
    
    --text-dark: #2a2a2a;
    --text-light: #666;
    --white: #ffffff;
    --background: #ffffff;         /* 全体の背景を白にするか、薄い青にするかはお好みで */
    
    /* Typography */
    --font-headline: 'Lora', serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --section-spacing: 5rem;
}

/* ===========================
   RESET & BASE STYLES
   =========================== */

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

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

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--background);
    line-height: 1.7;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    color: var(--dark);
    line-height: 1.3;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===========================
   NAVIGATION
   =========================== */

.navbar {
    background-color: var(--white);
    padding: 1.25rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-headline);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.back-link {
    color: var(--secondary);
    font-weight: 500;
}

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

/* ===========================
   HERO SECTION
   =========================== */

.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
background: linear-gradient(135deg, #b3e0ff 0%, #ffffff 100%);
    padding: 4rem 2rem;
    color: var(--text-dark);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    z-index: 10;
}

.hero-badge {
    display: inline-block;
   background-color: #00bfff; 
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-title .highlight {
    color: #00bfff;
    position: relative;
}

.hero-description {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

/* Hero Decorations */
.hero-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: -100px;
    right: -50px;
}

.circle-2 {
    width: 200px;
    height: 200px;
    background: var(--accent);
    bottom: 10%;
    left: -50px;
}

.circle-3 {
    width: 150px;
    height: 150px;
    background: var(--secondary);
    top: 50%;
    right: 10%;
}

/* ===========================
   BUTTONS
   =========================== */

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
    font-family: var(--font-body);
}

.btn-primary {
  background-color: #00bfff;
    border-color: #00bfff;
    color: var(--white);
}

.btn-primary:hover {
    background-color: #009acd; 
    border-color: #009acd;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 191, 255, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary);
    border-color: var(--secondary);
}

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

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

.btn-light:hover {
    background-color: transparent;
    border-color: var(--white);
    color: var(--white);
}

.btn-small {
    padding: 0.6rem 1.5rem;
    font-size: 0.95rem;
}

.btn-full {
    width: 100%;
}

/* ===========================
   SECTION STYLES
   =========================== */

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

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.section-description {
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
}

/* ===========================
   HIGHLIGHTS SECTION
   =========================== */

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

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.highlight-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--frosted-mint) 100%);
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.highlight-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.card-1:hover { border-color: var(--primary); }
.card-2:hover { border-color: var(--accent); }
.card-3:hover { border-color: var(--secondary); }
.card-4:hover { border-color: var(--hunter-green); }

.card-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.highlight-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.highlight-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===========================
   FEATURED PROJECTS PREVIEW
   =========================== */

.featured-projects {
    background-color: var(--background);
}

.projects-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.project-preview {
    background-color: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.project-preview:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.project-preview-image {
    height: 250px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-placeholder {
    font-size: 2rem;
    color: var(--white);
    font-weight: 700;
    opacity: 0.7;
}

.project-preview-content {
    padding: 2rem;
}

.project-category {
    display: inline-block;
    background-color: var(--frosted-mint);
    color: var(--hunter-green);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.project-preview-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.project-preview-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.link-arrow {
    color: var(--primary);
    font-weight: 600;
}

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

/* ===========================
   PAGE HEADER
   =========================== */

.page-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--crushed-berry) 100%);
    color: var(--white);
    padding: 5rem 2rem 4rem;
    text-align: center;
}

.page-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.page-description {
    font-size: 1.3rem;
    opacity: 0.95;
}

/* ===========================
   ABOUT PAGE
   =========================== */

.about-content {
    padding: 4rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.about-visual {
    position: sticky;
    top: 100px;
}

.profile-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--frosted-mint), var(--white));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-light);
    border: 3px solid var(--primary);
    margin-bottom: 2rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.stat-box {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.stat-number {
    display: block;
    font-family: var(--font-headline);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.about-text .lead {
    font-size: 1.3rem;
    color: var(--secondary);
    font-weight: 500;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ===========================
   SKILLS SECTION
   =========================== */

.skills-section {
    background-color: var(--white);
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.skill-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background-color: var(--frosted-mint);
    color: var(--hunter-green);
    padding: 0.6rem 1.2rem;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.skill-tag:hover {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ===========================
   TIMELINE
   =========================== */

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

.timeline {
    max-width: 800px;
    margin: 3rem auto 0;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 18px;
    top: 0;
    width: 25px;
    height: 25px;
    background-color: var(--primary);
    border-radius: 50%;
    border: 4px solid var(--white);
    box-shadow: 0 0 0 3px var(--frosted-mint);
}

.timeline-content {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
}

.timeline-date {
    display: inline-block;
    background-color: var(--frosted-mint);
    color: var(--hunter-green);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===========================
   PORTFOLIO PAGE
   =========================== */

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

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.portfolio-card {
    background-color: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.portfolio-card.featured {
    border: 3px solid var(--primary);
}

.portfolio-image {
    height: 260px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.image-placeholder {
    font-size: 1.5rem;
    color: var(--white);
    font-weight: 600;
    opacity: 0.7;
}

.project-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--accent);
    color: var(--white);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.portfolio-content {
    padding: 2rem;
}

.project-meta {
    display: block;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.portfolio-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.portfolio-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.project-tags span {
    background-color: var(--frosted-mint);
    color: var(--hunter-green);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* ===========================
   CONTACT PAGE
   =========================== */

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info-panel,
.contact-form-panel {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.contact-info-panel h2,
.contact-form-panel h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.contact-info-panel p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.contact-details a {
    color: var(--primary);
}

.contact-details a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.availability {
    background-color: var(--frosted-mint);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--hunter-green);
}

.availability h4 {
    margin-bottom: 0.5rem;
}

.availability p {
    margin: 0;
    color: var(--hunter-green);
    font-weight: 500;
}

/* Contact Form */
.form-instruction {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-style: italic;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-group textarea {
    resize: vertical;
}

/* ===========================
   PROJECT REPORT PAGES
   =========================== */

.report-header {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: var(--white);
    padding: 5rem 2rem 3rem;
    text-align: center;
}

.report-category {
    display: inline-block;
    background-color: rgba(255,255,255,0.2);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.report-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.report-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    margin-bottom: 2.5rem;
}

.report-meta {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.meta-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.3rem;
}

.meta-value {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Report Content Layout */
.report-content {
    background-color: var(--background);
    padding: 4rem 0;
}

.report-layout {
    display: grid;
    grid-template-columns: 2.5fr 1fr;
    gap: 3rem;
    align-items: start;
}

.report-main {
    background-color: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: 0 3px 20px rgba(0,0,0,0.08);
}

.report-section {
    margin-bottom: 3rem;
}

.report-section:last-child {
    margin-bottom: 0;
}

.section-heading {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--frosted-mint);
}

.report-section h3 {
    font-size: 1.4rem;
    margin: 2rem 0 1rem;
    color: var(--secondary);
}

.report-section h4 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--dark);
}

.report-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-light);
}

.report-section ul,
.report-section ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.report-section li {
    margin-bottom: 0.75rem;
    line-height: 1.7;
    color: var(--text-light);
}

.objectives-list {
    list-style: none;
    margin-left: 0;
}

.objectives-list li {
    background-color: var(--frosted-mint);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
}

/* Highlight Box */
.highlight-box {
    background: linear-gradient(135deg, var(--frosted-mint), var(--white));
    padding: 2rem;
    border-radius: 12px;
    border-left: 5px solid var(--accent);
    margin: 2rem 0;
}

.highlight-box h4 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.highlight-box p {
    margin-bottom: 0;
}

/* Process Steps */
.process-steps {
    margin: 2rem 0;
}

.process-step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: start;
}

.step-number {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    margin: 0 0 0.5rem 0;
}

.step-content p {
    margin: 0;
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.result-card {
    background: linear-gradient(135deg, var(--frosted-mint), var(--white));
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--primary);
}

.result-number {
    display: block;
    font-family: var(--font-headline);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.result-label {
    display: block;
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Report Sidebar */
.report-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-section {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    margin-bottom: 2rem;
}

.sidebar-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.details-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.details-list dt {
    font-weight: 600;
    color: var(--dark);
    font-size: 0.9rem;
}

.details-list dd {
    color: var(--text-light);
    margin-left: 0;
    margin-bottom: 0.5rem;
}

.sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.sidebar-tags span {
    background-color: var(--frosted-mint);
    color: var(--hunter-green);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.resource-list {
    list-style: none;
    padding: 0;
}

.resource-list li {
    margin-bottom: 0.75rem;
}

.resource-list a {
    color: var(--primary);
    font-weight: 500;
}

.resource-list a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.sidebar-cta {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    color: var(--white);
}

.sidebar-cta p {
    margin-bottom: 1rem;
}

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

.sidebar-cta .btn-small:hover {
    background-color: var(--frosted-mint);
}

/* Project Navigation */
.project-navigation {
    background-color: var(--white);
    padding: 2rem 0;
    border-top: 1px solid #e0e0e0;
}

.nav-center {
    display: inline-block;
    color: var(--secondary);
    font-weight: 600;
    font-size: 1.1rem;
}

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

/* ===========================
   CTA SECTION
   =========================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--white);
    text-align: center;
    padding: 5rem 2rem;
}

.cta-content h2 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* ===========================
   FOOTER
   =========================== */

.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 3rem 2rem 1.5rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 2rem;
}

.footer-left h3 {
    color: var(--white);
    margin-bottom: 0.75rem;
}

.footer-left p {
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255,255,255,0.8);
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

/* ===========================
   ANIMATIONS
   =========================== */

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 1024px) {
    .about-grid,
    .contact-grid,
    .report-layout {
        grid-template-columns: 1fr;
    }
    
    .about-visual,
    .report-sidebar {
        position: static;
    }
    
    .projects-preview,
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-spacing: 3rem;
    }
    
    .nav-menu {
        gap: 1.5rem;
        font-size: 0.9rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title,
    .page-title,
    .report-title {
        font-size: 2.5rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .report-main {
        padding: 2rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .container {
        padding: 0 1.5rem;
    }
}


/* プロフィール画像を枠の中にきれいに収める */
.profile-placeholder img {
    width: 100%;
    height: auto;
    object-fit: cover;
    border-radius: 8px; /* 角を少し丸くする（お好みで） */
}


/* --- ページ上部のタイトル背景を青グラデーションにする --- */
.page-header {
    background: linear-gradient(135deg, var(--ocean-blue) 0%, var(--sky-blue) 100%);
    color: var(--white);
    padding: 4rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.page-title {
    color: var(--white);
    margin-bottom: 0.5rem;
}

.page-description {
    color: rgba(255, 255, 255, 0.9);
}