/* ==================== GOOGLE FONTS ==================== */
@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ==================== CSS VARIABLES ==================== */
:root {
    --black:        #080808;
    --black-2:      #0f0f0f;
    --black-3:      #161616;
    --black-4:      #1e1e1e;
    --black-5:      #252525;
    --green:        #00ff87;
    --green-dim:    #00cc6a;
    --green-muted:  rgba(0,255,135,0.08);
    --white:        #f5f5f0;
    --white-dim:    rgba(245,245,240,0.6);
    --white-muted:  rgba(245,245,240,0.15);
    --white-faint:  rgba(245,245,240,0.06);
    --border:       rgba(245,245,240,0.06);
    --border-green: rgba(0,255,135,0.2);
    --red:          #ff5f5f;
    --red-muted:    rgba(255,95,95,0.1);

    /* Legacy compat */
    --color-primary:       #00ff87;
    --color-primary-dark:  #00cc6a;
    --color-primary-light: rgba(0,255,135,0.1);
    --color-text:          #f5f5f0;
    --color-text-light:    rgba(245,245,240,0.6);
    --color-white:         #f5f5f0;
    --color-background:    #0f0f0f;
    --color-border:        rgba(245,245,240,0.06);
    --color-success:       #00ff87;
    --color-error:         #ff5f5f;

    --font-display: 'Syne', sans-serif;
    --font-body:    'DM Sans', sans-serif;
    --font-family:  'DM Sans', sans-serif;

    --font-size-xs:   0.72rem;
    --font-size-sm:   0.85rem;
    --font-size-base: 1rem;
    --font-size-lg:   1.1rem;
    --font-size-xl:   1.25rem;
    --font-size-2xl:  1.5rem;
    --font-size-3xl:  2rem;
    --font-size-4xl:  2.5rem;

    --spacing-xs:  0.5rem;
    --spacing-sm:  0.75rem;
    --spacing-md:  1rem;
    --spacing-lg:  1.5rem;
    --spacing-xl:  2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 5rem;

    --max-width:        1200px;
    --header-height:    64px;
    --border-radius:    8px;
    --border-radius-lg: 14px;
    --border-radius-full: 9999px;

    --shadow-sm:    0 1px 3px rgba(0,0,0,0.3);
    --shadow-md:    0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg:    0 8px 32px rgba(0,0,0,0.5);
    --shadow-xl:    0 20px 60px rgba(0,0,0,0.6);
    --shadow-green: 0 8px 32px rgba(0,255,135,0.2);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.16,1,0.3,1);

    --z-tooltip: 10;
    --z-fixed:   100;
    --z-modal:   200;
}

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

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: 300;
    line-height: 1.6;
    color: var(--white);
    background-color: var(--black);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.35;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--white);
}

a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
img, svg { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; outline: none; }
input, textarea, select { font-family: inherit; font-size: inherit; border: none; outline: none; }

/* ==================== LAYOUT ==================== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing-lg); }
.section { padding: var(--spacing-3xl) 0; }

/* ==================== HEADER ==================== */
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: var(--header-height);
    background: transparent;
    border-bottom: 1px solid transparent;
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scroll-header {
    background: rgba(8,8,8,0.88);
    border-bottom-color: var(--border);
    backdrop-filter: blur(20px);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    color: var(--white);
}

.nav__logo span { color: var(--green); }

.nav__logo-img {
    width: 36px; height: 36px;
    object-fit: contain;
    border-radius: 8px;
    transition: transform var(--transition-base);
}

.nav__logo:hover .nav__logo-img { transform: scale(1.08) rotate(4deg); }

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

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 400;
    color: var(--white-dim);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover, .nav__link.active-link { color: var(--white); }

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 1px;
    background: var(--green);
    transition: width var(--transition-base);
}

.nav__link:hover::after, .nav__link.active-link::after { width: 100%; }

.nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--green);
    color: var(--black) !important;
    padding: 9px 20px;
    border-radius: var(--border-radius);
    font-weight: 500 !important;
    font-size: var(--font-size-sm) !important;
    transition: all var(--transition-base) !important;
}

.nav__cta::after { display: none !important; }
.nav__cta:hover { background: var(--green-dim) !important; transform: translateY(-1px); }

.nav__user { display: none; align-items: center; gap: 12px; }
.nav__user.visible { display: flex; }

.nav__user-email {
    font-size: var(--font-size-xs);
    color: var(--white-dim);
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav__logout {
    background: none;
    border: 1px solid var(--border);
    color: var(--white-dim);
    padding: 7px 14px;
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav__logout:hover { border-color: var(--white-muted); color: var(--white); }

.nav__toggle, .nav__close { display: none; cursor: pointer; color: var(--white); font-size: 1.4rem; }

/* ==================== BUTTONS ==================== */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 14px var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    cursor: pointer;
    font-family: var(--font-body);
    text-decoration: none;
}

.button--primary { background: var(--green); color: var(--black); border: none; }
.button--primary:hover { background: var(--green-dim); transform: translateY(-2px); box-shadow: var(--shadow-green); }
.button--secondary { background: transparent; color: var(--white-dim); border: 1px solid var(--border); }
.button--secondary:hover { color: var(--white); border-color: var(--white-muted); }
.button--block { width: 100%; }
.button__loader { display: inline-block; width: 20px; height: 20px; }
.button:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ==================== SECTION HEADERS ==================== */
.section__label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--green);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section__title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 14px;
}

.section__subtitle {
    font-size: var(--font-size-base);
    color: var(--white-dim);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
    max-width: 520px;
}

/* ==================== CARDS ==================== */
.card {
    background: var(--black-2);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.card:hover { border-color: var(--border-green); transform: translateY(-3px); }

/* ==================== FORM ELEMENTS ==================== */
.form__group { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.form__group--full { grid-column: 1 / -1; }
.form__label { font-size: var(--font-size-sm); font-weight: 400; color: var(--white-dim); }

.form__input, .form__textarea, .form__select {
    padding: 13px 16px;
    background: var(--black-4);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: var(--font-size-sm);
    font-weight: 300;
    transition: border-color var(--transition-fast);
}

.form__input:focus, .form__textarea:focus, .form__select:focus {
    border-color: var(--border-green);
    box-shadow: 0 0 0 3px rgba(0,255,135,0.06);
}

.form__input::placeholder, .form__textarea::placeholder { color: var(--white-muted); }
.form__textarea { resize: vertical; min-height: 120px; }

.form__select {
    cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='rgba(245,245,240,0.3)' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.form__select option { background: var(--black-3); }

.form__message { padding: 12px 16px; border-radius: var(--border-radius); font-size: var(--font-size-sm); text-align: center; display: none; }
.form__message.show { display: block; }
.form__message.success { background: var(--green-muted); color: var(--green); border: 1px solid var(--border-green); }
.form__message.error { background: var(--red-muted); color: var(--red); border: 1px solid rgba(255,95,95,0.2); }

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(8,8,8,0.88);
    backdrop-filter: blur(12px);
    z-index: var(--z-modal);
    display: flex; align-items: center; justify-content: center;
    padding: 16px;
    opacity: 0; pointer-events: none;
    transition: opacity var(--transition-base);
}

.modal-overlay.visible { opacity: 1; pointer-events: all; }

.modal {
    background: var(--black-2);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px;
    width: 100%; max-width: 420px;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-slow);
}

.modal-overlay.visible .modal { transform: translateY(0); }

.modal__close {
    position: absolute; top: 18px; right: 18px;
    background: none; border: 1px solid var(--border);
    color: var(--white-dim); width: 32px; height: 32px;
    border-radius: var(--border-radius);
    cursor: pointer; font-size: 0.9rem;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
}

.modal__close:hover { border-color: var(--white-muted); color: var(--white); }

.modal__title { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; letter-spacing: -0.03em; margin-bottom: 6px; }
.modal__sub { font-size: var(--font-size-sm); color: var(--white-dim); margin-bottom: 28px; }

.modal__tabs { display: flex; gap: 2px; background: var(--black-4); border-radius: var(--border-radius); padding: 4px; margin-bottom: 24px; }

.modal__tab {
    flex: 1; padding: 8px; border-radius: 6px; border: none;
    background: transparent; color: var(--white-dim);
    font-size: var(--font-size-sm); cursor: pointer;
    transition: all var(--transition-fast);
}

.modal__tab.active { background: var(--black-2); color: var(--white); border: 1px solid var(--border); }

.modal__form { display: flex; flex-direction: column; gap: 12px; }

.modal__input {
    width: 100%;
    background: var(--black-4); border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 13px 16px; color: var(--white);
    font-size: var(--font-size-sm); outline: none;
    transition: border-color var(--transition-fast);
}

.modal__input:focus { border-color: var(--border-green); }
.modal__input::placeholder { color: var(--white-muted); }

.modal__submit {
    background: var(--green); color: var(--black); border: none;
    padding: 14px; border-radius: var(--border-radius);
    font-size: var(--font-size-sm); font-weight: 500;
    cursor: pointer; transition: all var(--transition-base); margin-top: 4px;
}

.modal__submit:hover:not(:disabled) { background: var(--green-dim); transform: translateY(-1px); }
.modal__submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.modal__error { font-size: var(--font-size-xs); color: var(--red); text-align: center; display: none; padding: 8px; background: var(--red-muted); border-radius: 6px; border: 1px solid rgba(255,95,95,0.15); }
.modal__error.visible { display: block; }
.modal__success { font-size: var(--font-size-xs); color: var(--green); text-align: center; display: none; padding: 8px; background: var(--green-muted); border-radius: 6px; border: 1px solid var(--border-green); }
.modal__success.visible { display: block; }

/* ==================== TAGS ==================== */
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: var(--border-radius-full); font-size: var(--font-size-xs); font-weight: 500; letter-spacing: 0.04em; }
.tag--green { background: var(--green-muted); border: 1px solid var(--border-green); color: var(--green); }
.tag--white { background: var(--white-faint); border: 1px solid var(--border); color: var(--white-dim); }
.tag__dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; animation: blink 2s ease-in-out infinite; }

/* ==================== FOOTER ==================== */
.footer { border-top: 1px solid var(--border); padding: var(--spacing-xl) 0; background: var(--black); }

.footer__container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--spacing-md); }

.footer__logo { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; letter-spacing: -0.02em; color: var(--white); }
.footer__logo span { color: var(--green); }
.footer__logo-img { width: 32px; height: 32px; object-fit: contain; border-radius: 6px; }
.footer__copy { font-size: var(--font-size-xs); color: var(--white-muted); }
.footer__list { display: flex; gap: var(--spacing-lg); }
.footer__link { font-size: var(--font-size-xs); color: var(--white-muted); transition: color var(--transition-fast); }
.footer__link:hover { color: var(--white-dim); }

/* ==================== SCROLL TO TOP ==================== */
.scrolltop {
    position: fixed; right: var(--spacing-lg); bottom: -20%;
    display: flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    background: var(--black-4); border: 1px solid var(--border);
    color: var(--white-dim); border-radius: var(--border-radius-full);
    z-index: var(--z-tooltip); transition: all var(--transition-base); opacity: 0;
}

.scrolltop:hover { border-color: var(--border-green); color: var(--green); transform: translateY(-3px); }
.show-scroll { bottom: var(--spacing-xl); opacity: 1; }

/* ==================== CONTACT (hérité) ==================== */
.contact { background: var(--black-2); border-top: 1px solid var(--border); }
.contact__container { display: grid; grid-template-columns: 1fr 2fr; gap: var(--spacing-3xl); }
.contact__info { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.contact__card { padding: var(--spacing-lg); background: var(--black-3); border-radius: var(--border-radius-lg); border: 1px solid var(--border); transition: border-color var(--transition-base); }
.contact__card:hover { border-color: var(--border-green); }
.contact__card-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--green-muted); border: 1px solid var(--border-green); color: var(--green); border-radius: var(--border-radius); margin-bottom: var(--spacing-md); font-size: 1.2rem; }
.contact__card-title { font-size: var(--font-size-base); margin-bottom: 4px; }
.contact__card-data { color: var(--white-dim); font-size: var(--font-size-sm); }
.contact__form { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
.form__privacy { grid-column: 1 / -1; font-size: var(--font-size-xs); color: var(--white-muted); text-align: center; }

/* ==================== ANIMATIONS ==================== */
@keyframes fade-up { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }
@keyframes pulse-glow { 0%, 100% { opacity: 0.5; transform: scale(1); } 50% { opacity: 0.9; transform: scale(1.08); } }
@keyframes rotate { 100% { transform: rotate(360deg); } }
@keyframes dash { 0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; } 50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; } 100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; } }

.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(0.16,1,0.3,1), transform 0.7s cubic-bezier(0.16,1,0.3,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

.spinner { animation: rotate 1s linear infinite; }
.spinner .path { stroke: currentColor; stroke-linecap: round; animation: dash 1.5s ease-in-out infinite; }

/* ==================== RESPONSIVE ==================== */
@media screen and (max-width: 768px) {
    :root { --spacing-3xl: 3.5rem; --font-size-4xl: 1.8rem; --font-size-3xl: 1.5rem; }

    .nav__menu {
        position: fixed; top: 0; right: -100%;
        width: 75%; height: 100vh;
        background: var(--black-2); border-left: 1px solid var(--border);
        padding: var(--spacing-2xl);
        transition: right var(--transition-slow); z-index: var(--z-fixed);
    }

    .nav__menu.show-menu { right: 0; }
    .nav__list { flex-direction: column; align-items: flex-start; gap: var(--spacing-lg); margin-top: var(--spacing-2xl); }
    .nav__close { display: block; position: absolute; top: var(--spacing-lg); right: var(--spacing-lg); }
    .nav__toggle { display: block; }
    .nav__user { display: none !important; }
    .contact__container { grid-template-columns: 1fr; }
    .contact__form { grid-template-columns: 1fr; }
    .footer__container { flex-direction: column; text-align: center; }
    .footer__list { justify-content: center; }
    .modal { padding: 32px 24px; }
}

@media screen and (max-width: 480px) { .container { padding: 0 var(--spacing-md); } .button { width: 100%; } }
@media screen and (min-width: 1200px) { .container { padding: 0 var(--spacing-xl); } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; } }
*:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }