/*
Theme Name: TRIAL Corp
Version: 1.0.0
Requires at least: 5.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: trial-corp
*/

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    /* Colors */
    --color-primary: #4a9d7c;
    --color-primary-dark: #3a7d62;
    --color-primary-light: #6ab99a;
    --color-secondary: #f5f0e8;
    --color-accent: #e8846c;
    --color-accent-dark: #d66a50;
    --color-text: #3d4a4f;
    --color-text-light: #6b7a80;
    --color-white: #ffffff;
    --color-border: #e0ddd6;

    /* Typography */
    --font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 42px;
    --line-height: 1.8;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;

    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;

    /* Effects */
    --border-radius: 12px;
    --border-radius-sm: 6px;
    --shadow: 0 4px 20px rgba(74, 157, 124, 0.1);
    --shadow-hover: 0 8px 30px rgba(74, 157, 124, 0.15);
    --transition: 0.3s ease;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
}

.section__title::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: box-shadow var(--transition);
}

.header--scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.header__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.header__logo span {
    color: var(--color-text);
}

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

.header__menu {
    display: flex;
    gap: var(--spacing-md);
}

.header__menu-item a {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.header__menu-item a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition);
}

.header__menu-item a:hover::after {
    width: 100%;
}

.header__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    gap: 6px;
}

.header__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition), opacity var(--transition);
}

.header__toggle.is-active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.header__toggle.is-active span:nth-child(2) {
    opacity: 0;
}

.header__toggle.is-active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    background: linear-gradient(135deg, #f0f7f4 0%, #e8f4f0 50%, #faf5f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(74, 157, 124, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(232, 132, 108, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero__catch {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.hero__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

.hero__title-accent {
    color: var(--color-primary);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 2;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 50px;
    transition: transform var(--transition), box-shadow var(--transition);
}

.hero__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 157, 124, 0.3);
}

.hero__cta svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition);
}

.hero__cta:hover svg {
    transform: translateX(4px);
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__text {
    font-size: var(--font-size-lg);
    line-height: 2.2;
    color: var(--color-text-light);
}

.about__text strong {
    color: var(--color-text);
    font-weight: 600;
}

.about__features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.about__feature {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.about__feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
}

.about__feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.about__feature-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.service-card__image {
    height: 200px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card__image svg {
    width: 80px;
    height: 80px;
    color: var(--color-white);
    opacity: 0.9;
}

.service-card__content {
    padding: var(--spacing-md);
}

.service-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.8;
}

.service-card__list {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.service-card__list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.service-card__list-item:last-child {
    margin-bottom: 0;
}

.service-card__list-item::before {
    content: "";
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact__content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 2;
}

.contact__button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    transition: transform var(--transition), box-shadow var(--transition);
}

.contact__button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(232, 132, 108, 0.3);
}

.contact__button svg {
    width: 24px;
    height: 24px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-text);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.footer__logo span {
    color: var(--color-primary-light);
}

.footer__nav {
    display: flex;
    gap: var(--spacing-md);
}

.footer__nav a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition);
}

.footer__nav a:hover {
    color: var(--color-white);
}

.footer__legal {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition);
}

.footer__legal a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
    :root {
        --font-size-3xl: 36px;
        --font-size-2xl: 28px;
    }

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

@media (max-width: 768px) {
    :root {
        --font-size-3xl: 28px;
        --font-size-2xl: 24px;
        --spacing-xl: 60px;
    }

    .header__toggle {
        display: flex;
    }

    .header__nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-lg);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition), visibility var(--transition);
    }

    .header__nav.is-open {
        opacity: 1;
        visibility: visible;
    }

    .header__menu {
        flex-direction: column;
        gap: var(--spacing-sm);
        width: 100%;
    }

    .header__menu-item a {
        display: block;
        font-size: var(--font-size-lg);
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-border);
    }

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

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

    .footer__nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-3xl: 24px;
        --font-size-2xl: 20px;
        --font-size-xl: 18px;
        --spacing-xl: 48px;
        --spacing-lg: 32px;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-sm) var(--spacing-xl);
    }

    .hero__cta {
        width: 100%;
        justify-content: center;
    }

    .contact__button {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   Contact Page
   ========================================================================== */
.page-contact {
    padding-top: var(--header-height);
}

.page-header {
    background: linear-gradient(135deg, #f0f7f4 0%, #e8f4f0 50%, #faf5f0 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-header__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.page-header__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Contact Form */
.contact-form-wrapper {
    max-width: 640px;
    margin: 0 auto;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-lg);
}

.contact-form__group {
    margin-bottom: var(--spacing-md);
}

.contact-form__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.contact-form__required {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-white);
    background-color: var(--color-accent);
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 8px;
}

.contact-form__input,
.contact-form__select,
.contact-form__textarea {
    width: 100%;
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form__input:focus,
.contact-form__select:focus,
.contact-form__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 157, 124, 0.1);
}

.contact-form__input::placeholder,
.contact-form__textarea::placeholder {
    color: var(--color-text-light);
    opacity: 0.6;
}

.contact-form__input.is-error,
.contact-form__textarea.is-error {
    border-color: var(--color-accent);
}

.contact-form__select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%236b7a80'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 40px;
    cursor: pointer;
}

.contact-form__textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form__error {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    margin-top: 4px;
    min-height: 20px;
}

.contact-form__privacy {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: var(--color-secondary);
    border-radius: var(--border-radius-sm);
}

.contact-form__submit {
    text-align: center;
}

.contact-form__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    min-width: 200px;
    font-family: inherit;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border: none;
    border-radius: 50px;
    padding: var(--spacing-sm) var(--spacing-lg);
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}

.contact-form__button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 157, 124, 0.3);
}

.contact-form__button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.contact-form__button-loading {
    display: none;
    align-items: center;
    gap: var(--spacing-xs);
}

.contact-form__button.is-loading .contact-form__button-text {
    display: none;
}

.contact-form__button.is-loading .contact-form__button-loading {
    display: flex;
}

.contact-form__spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.contact-form__message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-size: var(--font-size-base);
    display: none;
}

.contact-form__message.is-visible {
    display: block;
}

.contact-form__message.is-success {
    background-color: rgba(74, 157, 124, 0.1);
    color: var(--color-primary-dark);
    border: 1px solid var(--color-primary);
}

.contact-form__message.is-error {
    background-color: rgba(232, 132, 108, 0.1);
    color: var(--color-accent-dark);
    border: 1px solid var(--color-accent);
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-primary);
    transition: color var(--transition);
}

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

.back-link svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition);
}

.back-link:hover svg {
    transform: translateX(-4px);
}

/* Contact Page Responsive */
@media (max-width: 768px) {
    .contact-form-wrapper {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .contact-form-wrapper {
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-sm);
    }

    .contact-form__button {
        width: 100%;
    }
}

/* ==========================================================================
   Legal Pages (Terms, Privacy)
   ========================================================================== */
.page-legal {
    padding-top: var(--header-height);
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: var(--spacing-lg);
}

.legal-article__intro {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    line-height: 2;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section:last-of-type {
    margin-bottom: var(--spacing-md);
}

.legal-section__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
    border-left: 4px solid var(--color-primary);
}

.legal-section p {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 2;
    margin-bottom: var(--spacing-sm);
}

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

.legal-list {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-md);
}

.legal-list li {
    position: relative;
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 2;
    padding-left: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.legal-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.legal-article__date {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    text-align: right;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* Legal Pages Responsive */
@media (max-width: 768px) {
    .legal-content {
        padding: var(--spacing-md);
    }

    .legal-section__title {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .legal-content {
        padding: var(--spacing-sm);
        border-radius: var(--border-radius-sm);
    }
}