/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    /* Colors */
    --color-primary: #1E2F2A;
    --color-primary-dark: #162420;
    --color-primary-light: #2D4039;
    --color-cream: #F5F2EC;
    --color-cream-dark: #E8E4DC;
    --color-white: #FFFFFF;
    --color-black: #0A0A0A;
    --color-overlay: rgba(0, 0, 0, 0.4);
    --color-success: #4A7C59;
    --color-error: #C44536;
    
    /* Typography */
    --font-display: "contralto-big", sans-serif;
    --font-body: "Montserrat", -apple-system, sans-serif;
    --font-accent: "Instrument Serif", Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Layout */
    --hero-padding: 20px;
    --hero-border-color: var(--color-white);
    --hero-border-width: 1px;
    --border-radius: 16px;
    --border-radius-lg: 24px;
    
    /* Modal */
    --modal-width: 600px;
    --modal-height: 600px;
    --modal-transition-duration: 0.3s;
    --modal-transition-timing: cubic-bezier(0.4, 0, 0, 1);
    
    /* Animations */
    --zoom-duration: 20s;
    --preloader-duration: 2s;
    --fade-duration: 0.6s;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-white);
    color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   Preloader
   ============================================ */
.preloader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background-color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--fade-duration) ease, visibility var(--fade-duration) ease;
}

.preloader.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader__logo {
    width: 180px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preloader__gif {
    width: 100%;
    height: auto;
    mix-blend-mode: lighten;
    filter: contrast(1.1) brightness(1.05);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh; /* fix mobile */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--hero-padding);
    overflow: hidden;
}

/* Background */
.hero__background {
    position: absolute;
    inset: var(--hero-padding);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: var(--hero-border-width) solid var(--hero-border-color);
}

.hero__background-image {
    display: block;
    position: absolute;
    inset: -20px;
    width: calc(100% + 40px);
    height: calc(100% + 40px);
    overflow: hidden;
    transform: scale(1.1);
    opacity: 0;
    transition: opacity 1.2s ease-in-out;
    z-index: 0;
}

.hero__background-image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero__background-image--active {
    opacity: 1;
    animation: heroZoom var(--zoom-duration) ease-out forwards;
    z-index: 1;
}

.hero__background-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    background: radial-gradient(
        ellipse 160% 140% at 50% 100%,
        rgba(0, 0, 0, 0.85) 0%,
        rgba(0, 0, 0, 0.55) 35%,
        rgba(0, 0, 0, 0) 65%
    );
}

@keyframes heroZoom {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

@keyframes heroZoomMobile {
    from { transform: scale(1.3); }
    to { transform: scale(1); }
}

/* Content Container */
.hero__container {
    position: relative;
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease 1.5s both;
}

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

/* Logo */
.hero__logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.hero__logo-img {
    width: 180px;
    height: auto;
}

/* Title */
.hero__title {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero__title-line {
    display: block;
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.hero__title-line:first-child {
    letter-spacing: -0.02em;
}

.hero__title-accent {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 400;
    font-size: 1.15em;
    letter-spacing: -0.01em;
    text-transform: none;
}

/* Subtitle */
.hero__subtitle {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
}

/* CTA Button */
.hero__cta {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 40px;
    background: transparent;
    border: none;
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--transition-normal);
}

.hero__cta::before,
.hero__cta::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--color-white);
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.hero__cta::before {
    transform: translate(-4px, -4px);
}

.hero__cta::after {
    transform: translate(4px, 4px);
}

.hero__cta:hover::before {
    transform: translate(0, 0);
    background: var(--color-white);
    z-index: -1;
}

.hero__cta:hover::after {
    transform: translate(0, 0);
    opacity: 0;
}

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

.hero__cta-arrow {
    font-size: 1rem;
    transition: transform var(--transition-normal);
}

.hero__cta:hover .hero__cta-arrow {
    transform: translate(2px, -2px);
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: calc(var(--hero-padding) + 20px);
    right: calc(var(--hero-padding) + 20px);
    z-index: 20;
    display: flex;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 6px;
    padding: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: fadeIn 0.6s ease 1.8s both;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.language-switcher__btn {
    padding: 8px 14px;
    background: transparent;
    border: none;
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-white);
    cursor: pointer;
    border-radius: 4px;
    transition: 
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.language-switcher__btn--active {
    background: var(--color-white);
    color: var(--color-primary);
}

.language-switcher__btn:not(.language-switcher__btn--active):hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ============================================
   Modal
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity var(--modal-transition-duration) var(--modal-transition-timing),
        visibility var(--modal-transition-duration) var(--modal-transition-timing);
}

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

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    opacity: 0;
    transition: opacity var(--modal-transition-duration) var(--modal-transition-timing);
}

.modal.is-open .modal__backdrop {
    opacity: 1;
}

.modal__container {
    position: relative;
    width: 100%;
    max-width: var(--modal-width);
    max-height: var(--modal-height);
    background: var(--color-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--modal-transition-duration) var(--modal-transition-timing);
}

.modal.is-open .modal__container {
    transform: scale(1) translateY(0);
}

.modal__close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-cream);
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    z-index: 5;
}

.modal__close:hover {
    opacity: 1;
}

.modal__close svg {
    width: 20px;
    height: 20px;
}

.modal__content {
    padding: var(--spacing-lg) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-height: var(--modal-height);
    overflow-y: auto;
}

/* Modal Logo */
.modal__logo {
    margin-bottom: var(--spacing-sm);
}

.modal__logo-img {
    width: 108px;
    height: 81px;
}

/* Modal Title */
.modal__title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 400;
    font-style: normal;
    letter-spacing: -0.02em;
    color: var(--color-cream);
    margin-bottom: var(--spacing-sm);
}

/* Modal Description */
.modal__description {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.7;
    color: var(--color-cream);
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

/* Form */
.modal__form {
    width: 100%;
    max-width: 420px;
}

.modal__form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 10px;
}

.modal__form-row .modal__form-group {
    margin-bottom: 0;
}

.modal__form-group {
    margin-bottom: 10px;
}

.modal__form-group--checkbox {
    margin-top: 6px;
    margin-bottom: var(--spacing-lg);
}

.modal__input {
    width: 100%;
    height: 48px;
    max-height: 48px;
    padding: 0 var(--spacing-md);
    background: var(--color-cream);
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    transition: box-shadow var(--transition-fast);
}

.modal__input::placeholder {
    color: var(--color-primary);
    opacity: 0.5;
}

.modal__input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--color-primary-light);
}

/* Custom Checkbox / Toggle */
.modal__checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.modal__checkbox input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.modal__checkbox-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--color-cream-dark);
    border-radius: 12px;
    flex-shrink: 0;
    transition: background-color var(--transition-fast);
}

.modal__checkbox-toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--color-white);
    border-radius: 50%;
    transition: transform var(--transition-fast);
}

.modal__checkbox input:checked + .modal__checkbox-toggle {
    background: var(--color-success);
}

.modal__checkbox input:checked + .modal__checkbox-toggle::after {
    transform: translateX(20px);
}

.modal__checkbox-label {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-cream);
    text-align: left;
}

/* Submit Button */
.modal__submit {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 14px 40px;
    background: transparent;
    border: none;
    color: var(--color-cream);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--transition-normal), opacity var(--transition-normal);
}

.modal__submit::before,
.modal__submit::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--color-cream);
    transition: transform var(--transition-normal), opacity var(--transition-normal), background-color var(--transition-normal);
}

.modal__submit::before {
    transform: translate(-4px, -4px);
}

.modal__submit::after {
    transform: translate(4px, 4px);
}

.modal__submit:hover:not(:disabled)::before {
    transform: translate(0, 0);
    background: var(--color-cream);
    z-index: -1;
}

.modal__submit:hover:not(:disabled)::after {
    transform: translate(0, 0);
    opacity: 0;
}

.modal__submit:hover:not(:disabled) {
    color: var(--color-primary);
}

.modal__submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.modal__submit-arrow {
    font-size: 1rem;
    transition: transform var(--transition-normal);
}

.modal__submit:hover:not(:disabled) .modal__submit-arrow {
    transform: translate(2px, -2px);
}

/* Success Message */
.modal__success {
    display: none;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl) 0;
}

.modal__success.is-visible {
    display: flex;
    animation: fadeInUp 0.5s ease;
}

.modal__success-icon {
    width: 60px;
    height: 60px;
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
}

.modal__success-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    font-style: italic;
    color: var(--color-cream);
    margin-bottom: var(--spacing-sm);
}

.modal__success-text {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 300;
    color: var(--color-cream);
    opacity: 0.9;
}

/* Error Message */
.modal__error {
    display: none;
    margin-top: var(--spacing-sm);
}

.modal__error.is-visible {
    display: block;
    animation: shake 0.5s ease;
}

.modal__error-text {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    color: var(--color-error);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Form hidden when success */
.modal__form.is-hidden {
    display: none;
}

/* CGV Link */
.modal__link {
    color: var(--color-cream);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: opacity var(--transition-fast);
}

.modal__link:hover {
    opacity: 0.7;
}

/* CGV Modal */
.modal--cgv {
    z-index: 1001;
}

.modal--cgv .modal__backdrop {
    background: transparent;
}

.modal__container--cgv {
    max-width: 600px;
    max-height: 80vh;
}

.modal__content--cgv {
    max-height: 80vh;
    text-align: left;
}

.modal__back {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: transparent;
    border: none;
    color: var(--color-cream);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
    z-index: 5;
}

.modal__back:hover {
    opacity: 1;
}

.modal__back svg {
    width: 18px;
    height: 18px;
}

/* CGV Content */
.cgv__content {
    padding-right: var(--spacing-sm);
}

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

.cgv__section:last-child {
    margin-bottom: 0;
}

.cgv__section h3 {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-cream);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cgv__section p {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 400;
    color: var(--color-cream);
    opacity: 0.85;
    line-height: 1.7;
}

.cgv__section a,
.cgv__section p a {
    color: var(--color-cream);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: opacity var(--transition-fast);
}

.cgv__section a:hover,
.cgv__section p a:hover {
    opacity: 0.7;
}

.cgv__loading {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-cream);
    opacity: 0.6;
    text-align: center;
    padding: var(--spacing-xl);
}

/* ============================================
   Mobile Responsive
   ============================================ */
@media (max-width: 768px) {
    :root {
        --hero-padding: 0;
        --border-radius: 0;
    }
    
    .hero__background {
        border: none;
    }
    
    .hero__container {
        padding: var(--spacing-lg);
    }
    
    .hero__title-line {
        font-size: clamp(1.5rem, 8vw, 2.5rem);
    }
    
    .hero__title-accent {
        font-size: clamp(1.8rem, 9vw, 2.8rem);
    }
    
    .hero__subtitle {
        font-size: 0.6875rem;
    }
    
    .hero__subtitle br {
        display: none;
    }
    
    .hero__subtitle br {
        display: none;
    }
    
    .hero__logo {
        margin-bottom: var(--spacing-md);
    }

    .hero__logo-img {
        width: 130px;
    }
    
    .hero__background-image {
        transform: scale(1.3);
    }

    .hero__background-image--active {
        animation: heroZoomMobile var(--zoom-duration) ease-out forwards;
    }
    
    .hero__background-overlay {
        background: radial-gradient(
            ellipse 160% 140% at 50% 100%,
            rgba(0, 0, 0, 0.9) 0%,
            rgba(0, 0, 0, 0.6) 35%,
            rgba(0, 0, 0, 0.1) 65%
        );
    }
    
    .language-switcher {
        top: 15px;
        right: 15px;
    }
    
    .modal {
        padding: 0;
    }
    
    .modal__container {
        max-width: 100%;
        max-height: 100%;
        height: 100%;
        border-radius: 0;
    }
    
    .modal__content {
        padding: var(--spacing-lg) var(--spacing-md);
        justify-content: flex-start;
        min-height: 100%;
    }
    
    .modal__content--cgv {
        justify-content: flex-start;
        padding-top: 60px;
    }
    
    .modal__form-row {
        grid-template-columns: 1fr;
    }
    
    .modal__form-row .modal__form-group {
        margin-bottom: 10px;
    }
    
    .modal__description br {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero__cta {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.6875rem;
    }
    
    .modal__title {
        font-size: 1.5rem;
    }
    
    .modal__checkbox-label {
        font-size: 0.75rem;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
/* Social Links */
.social-links {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    z-index: 10;
    animation: fadeIn 0.6s ease 2s both;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: #fff;
    transform: translateY(-2px);
}

.social-links svg {
    width: 22px;
    height: 22px;
}

@media (max-width: 768px) {
    .social-links {
        bottom: calc(1.5rem + env(safe-area-inset-bottom));
    }
    
    .social-links svg {
        width: 20px;
        height: 20px;
    }
}