/* Landing - Fondo negro, texto blanco */
:root {
    --color-bg: #000000;
    --color-text: #ffffff;
    --color-text-muted: rgba(255, 255, 255, 0.85);
    --font-primary: 'Noto Sans Japanese', sans-serif;
    --font-display: 'Potta One', 'Zen Kaku Gothic Antique', sans-serif;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: flex-end;
}

.lang-selector {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.5rem;
    padding: 0.35rem 0.75rem;
    font-size: 0.9rem;
    font-family: var(--font-primary);
    cursor: pointer;
}

.lang-selector:hover,
.lang-selector:focus {
    border-color: rgba(255, 255, 255, 0.6);
    outline: none;
}

/* Main */
.main {
    flex: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    width: 100%;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero__logo {
    max-width: min(600px, 85vw);
    width: 100%;
    height: auto;
    display: block;
    margin-bottom: -28px;
    margin-left: auto;
    margin-right: auto;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.hero__text {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.hero__text br {
    display: block;
    content: "";
    margin-top: 0.5em;
}

/* Contact */
.contact {
    padding: var(--spacing-lg) 0;
}

.contact__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

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

.form__label {
    display: block;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.contact__subtitle {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.form__checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.form__checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.form__checkbox:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.35);
}

.form__checkbox input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
    accent-color: var(--color-text);
}

.form__checkbox span {
    font-size: 0.95rem;
    color: var(--color-text);
}

.form__select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 0.5rem;
    cursor: pointer;
}

.form__select:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
}

.form__select option {
    background: #111;
    color: var(--color-text);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-primary);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 0.5rem;
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
}

.form__textarea {
    resize: vertical;
    min-height: 100px;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s;
}

.btn--primary {
    background: var(--color-text);
    color: var(--color-bg);
}

.btn--primary:hover {
    opacity: 0.9;
}

.btn--large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

@media (max-width: 600px) {
    .form__checkboxes {
        grid-template-columns: 1fr;
    }
}

/* Footer */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: auto;
}

.footer__container {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer__text {
    margin-bottom: 0.25rem;
}

.footer__subtitle {
    margin-bottom: var(--spacing-sm);
}

.footer__disclaimer {
    font-size: 0.8rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.footer a {
    color: var(--color-text);
    text-decoration: underline;
}

.footer a:hover {
    opacity: 0.85;
}