/* ========================================
   Rhythmwalker - Main Styles
   ======================================== */

/* ========================================
   CSS Variables (Design Tokens)
   ======================================== */
:root {
    /* Colors - Exact Figma Values */
    --color-text-main: #444444;
    --color-bg-gray: #d9d9d9;
    --color-text-light: #f2eee4;
    --color-required: red;
    --color-black: black;
    --color-white: white;
    --color-error: #d32f2f;
    --color-success: #388e3c;

    /* Typography - Exact Figma Values */
    --font-family-english: 'Quicksand', sans-serif;
    --font-family-japanese: 'IPA exMincho', serif;
    --font-size-11: 11px;
    --font-size-12: 12px;
    --font-size-15: 15px;
    --font-size-16: 16px;
    --font-size-20: 20px;
    --font-size-30: 30px;
    --font-size-40: 40px;
    --font-size-50: 50px;
    --font-size-70: 70px;
    --line-height: 28.8px;
    --letter-spacing: 2px;

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

    /* Layout - Exact Figma Values */
    --max-width-content: 413px;
    --left-column-width: 338px;
    --right-column-width: 338px;
    --mobile-width: 440px;
    --form-input-width: 279px;
    --form-input-height: 26px;
    --form-textarea-height: 224px;

    /* Effects */
    --transition-speed: 0.3s;
    --border-width: 0.5px;
    --box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-family-japanese);
    line-height: var(--line-height);
    letter-spacing: var(--letter-spacing);
    color: var(--color-text-main);
    background-color: var(--color-bg-dark);
    background-image: url('../images/PC_BG.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow: hidden;
    height: 100vh;
}

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

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

ul, ol {
    list-style: none;
}

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

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height);
    font-weight: 300;
    letter-spacing: var(--letter-spacing);
}

h1 {
    font-family: var(--font-family-english);
    font-size: var(--font-size-40);
}

h2 {
    font-family: var(--font-family-japanese);
    font-size: var(--font-size-20);
}

h3 {
    font-family: var(--font-family-japanese);
    font-size: var(--font-size-15);
}

p {
    margin-bottom: 0;
    line-height: var(--line-height);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-lg);
    background-color: var(--color-white);
    text-align: center;
    gap: var(--spacing-sm);
}

.header-logo {
    height: 40px;
    width: auto;
    margin: 0 auto;
}

.header-tagline {
    font-family: var(--font-family-japanese);
    font-size: var(--font-size-20);
    color: var(--color-text-main);
    margin: 0;
    font-weight: 400;
}

.header-subtitle {
    font-family: var(--font-family-japanese);
    font-size: var(--font-size-15);
    color: var(--color-text-main);
    margin: 0;
    font-weight: 300;
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--spacing-xxl) 0;
    min-height: auto;
    background-color: var(--color-white);
}

.section-title {
    font-family: var(--font-family-english);
    font-size: var(--font-size-40);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-main);
    font-weight: 300;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-main);
    font-size: var(--font-size-16);
    margin-bottom: var(--spacing-md);
}

.section-content {
    max-width: var(--max-width-content);
    margin: 0 auto;
    font-size: var(--font-size-16);
    color: var(--color-text-main);
    text-align: center;
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 440px;
    position: relative;
    background-color: var(--color-white);
}

.hero-image {
    max-width: 440px;
    height: 440px;
    position: relative;
    margin: 0 auto;
}

.hero-image img,
.hero-image video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    background-color: var(--color-white);
}

.about-section p {
    margin-bottom: 0;
}

/* ========================================
   Service Section
   ======================================== */
.service-section {
    background-color: var(--color-white);
}

.service-item {
    max-width: var(--max-width-content);
    margin: 0 auto var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    border-bottom: none;
}

.service-item:last-child {
    border-bottom: none;
}

.service-name {
    text-align: center;
    font-size: var(--font-size-20);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-main);
    font-family: var(--font-family-japanese);
}

.service-name-en {
    display: block;
    font-size: var(--font-size-15);
    color: var(--color-text-main);
    margin-top: var(--spacing-xs);
    font-family: var(--font-family-english);
    font-weight: 300;
}

.service-icon {
    text-align: center;
    margin: var(--spacing-lg) 0;
}

.service-icon img {
    max-width: 80px;
    height: auto;
    margin: 0 auto;
}

.service-details {
    list-style: none;
    padding-left: 0;
    margin: var(--spacing-md) 0;
    font-size: var(--font-size-15);
    color: var(--color-black);
    text-align: center;
}

.service-details li {
    margin-bottom: var(--spacing-md);
    color: var(--color-black);
}

.service-details li::before {
    content: "";
}

.service-description {
    color: var(--color-text-main);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-12);
    text-align: left;
}

.service-description-title {
    display: block;
    text-align: center;
}

/* ========================================
   Works Section
   ======================================== */
.works-section {
    background-color: var(--color-white);
}

.works-content {
    max-width: var(--max-width-content);
    margin: 0 auto;
    min-height: 200px;
    text-align: center;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    background-color: var(--color-white);
    padding-bottom: var(--spacing-xxl);
}

.contact-description {
    max-width: var(--max-width-content);
    margin: 0 auto var(--spacing-md);
    color: var(--color-text-main);
    font-size: var(--font-size-12);
    text-align: center;
}

/* ========================================
   Contact Form
   ======================================== */
.contact-form {
    max-width: var(--max-width-content);
    margin: var(--spacing-xl) auto;
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-main);
    font-size: var(--font-size-12);
    text-align: left;
    max-width: var(--form-input-width);
    margin-left: auto;
    margin-right: auto;
}

.required {
    color: var(--color-required);
    font-size: var(--font-size-11);
    margin-left: var(--spacing-xs);
}

.form-control {
    width: var(--form-input-width);
    height: var(--form-input-height);
    padding: 4px 8px;
    border: var(--border-width) solid var(--color-text-main);
    border-radius: 0;
    background-color: var(--color-bg-gray);
    font-size: var(--font-size-12);
    transition: border-color var(--transition-speed);
    margin: 0 auto;
    display: block;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-text-main);
}

.form-control.error {
    border-color: var(--color-error);
}

textarea.form-control {
    resize: vertical;
    height: var(--form-textarea-height);
    min-height: var(--form-textarea-height);
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: var(--font-size-11);
    margin-top: var(--spacing-xs);
    min-height: 20px;
    text-align: center;
}

.g-recaptcha {
    display: inline-block;
}

.submit-btn {
    display: block;
    width: 134px;
    height: 31px;
    margin: var(--spacing-xl) auto 0;
    padding: 0;
    background-color: var(--color-text-main);
    color: var(--color-text-light);
    font-size: var(--font-size-12);
    border-radius: 0;
    border: none;
    transition: all var(--transition-speed);
    font-weight: 400;
    cursor: pointer;
}

.submit-btn:hover {
    opacity: 0.8;
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    text-align: center;
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-lg);
    border-top: none;
    color: var(--color-black);
    font-size: var(--font-size-12);
}

/* ========================================
   Modal
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: 4px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    box-shadow: var(--box-shadow);
}

.modal-content h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-main);
}

.modal-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-main);
}

.modal-close-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-text-main);
    color: var(--color-text-light);
    border-radius: 4px;
    font-size: var(--font-size-12);
    transition: background-color var(--transition-speed);
}

.modal-close-btn:hover {
    opacity: 0.8;
}

/* ========================================
   Mobile Menu Toggle (Hidden on Desktop)
   ======================================== */
.mobile-menu-toggle {
    display: none;
}