/* =====================================================
   CODEXA — Premium Design System
   Agence boutique · Web & IA
   ===================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-bg: #F5F0EB;
    --color-bg-alt: #EDE7E0;
    --color-surface: #FFFFFF;
    --color-surface-hover: #FAFAFA;
    --color-text: #1A1A1A;
    --color-text-muted: #6B6B6B;
    --color-text-light: #999999;
    --color-accent: #2C2C2C;
    --color-accent-hover: #444444;
    --color-border: #E0DAD3;
    --color-border-light: #EDE7E0;
    --color-success: #2E7D32;
    --color-error: #C62828;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.75rem;
    --font-size-4xl: 3.5rem;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.10);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --container-max: 1200px;
    --header-height: 72px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Animations ---------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(44, 44, 44, 0.15);
    }

    50% {
        box-shadow: 0 0 0 12px rgba(44, 44, 44, 0);
    }
}

/* ---------- Typography ---------- */
.section-tag {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto 48px;
    line-height: 1.8;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-cta {
    text-align: center;
    margin-top: 56px;
}

.text-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, #555 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-family);
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding: 12px 28px;
    border-radius: var(--radius-xl);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s, height 0.5s;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn--outline:hover {
    border-color: var(--color-accent);
    background: var(--color-surface);
    transform: translateY(-2px);
}

.btn--lg {
    padding: 16px 36px;
    font-size: var(--font-size-base);
}

.btn--full {
    width: 100%;
}

.btn--nav {
    padding: 10px 24px;
    font-size: var(--font-size-sm);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ---------- HEADER ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--transition);
    background: rgba(245, 240, 235, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background: rgba(245, 240, 235, 0.95);
    border-bottom-color: var(--color-border-light);
    box-shadow: var(--shadow-sm);
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-text);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 4px 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 4px;
    padding: 3px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-xl);
}

.lang-btn {
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 6px 12px;
    border: none;
    border-radius: var(--radius-xl);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.lang-btn.active {
    background: var(--color-surface);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

.lang-btn:hover:not(.active) {
    color: var(--color-text);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---------- HERO ---------- */
.hero {
    padding: calc(var(--header-height) + 80px) 0 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero__title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.hero__subtitle {
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 520px;
}

.hero__cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---------- STATS ---------- */
.stats {
    padding: 80px 0;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

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

.stat-card__number,
.stat-card__plus,
.stat-card__unit,
.stat-card__symbol {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.stat-card__label {
    margin-top: 12px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ---------- SERVICES ---------- */
.services {
    padding: 100px 0;
    background: var(--color-surface);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.service-card {
    padding: 40px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--color-accent);
    transition: height 0.4s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-border);
}

.service-card:hover::before {
    height: 100%;
}

.service-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    margin-bottom: 24px;
}

.service-card__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-card__benefits {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-card__benefits li {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ---------- PROCESS ---------- */
.process {
    padding: 100px 0;
    background: var(--color-surface);
}

.process__timeline {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
}

.process__timeline::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.process-step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
    padding: 32px 0;
    position: relative;
}

.process-step__number {
    width: 56px;
    height: 56px;
    min-width: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: #fff;
    font-weight: 700;
    font-size: var(--font-size-lg);
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.process-step__content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 8px;
}

.process-step__content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ---------- WHY CODEXA ---------- */
.why-codexa {
    padding: 100px 0;
}

.why__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.why-card {
    text-align: center;
    padding: 40px 28px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition);
}

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.why-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    color: var(--color-accent);
    border-radius: 50%;
    font-size: 1.25rem;
    margin: 0 auto 20px;
    transition: all var(--transition);
}

.why-card:hover .why-card__icon {
    background: var(--color-accent);
    color: #fff;
}

.why-card h3 {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: 10px;
}

.why-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ---------- FAQ ---------- */
.faq {
    padding: 100px 0;
}

.faq__list {
    max-width: 740px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: all var(--transition);
}

.faq-item:hover {
    border-color: var(--color-border);
}

.faq-item[open] {
    box-shadow: var(--shadow-sm);
}

.faq-item__question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color var(--transition);
}

.faq-item__question::-webkit-details-marker {
    display: none;
}

.faq-item__question::after {
    content: '+';
    font-size: var(--font-size-xl);
    font-weight: 300;
    color: var(--color-text-muted);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item[open] .faq-item__question::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-item__answer {
    padding: 0 24px 20px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* ---------- CONTACT ---------- */
.contact {
    padding: 100px 0;
    background: var(--color-surface);
}

.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact__details {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact__detail-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.contact__detail-item i {
    width: 20px;
    color: var(--color-accent);
}

.contact__detail-item a:hover {
    color: var(--color-text);
}

/* Form */
.contact__form {
    background: var(--color-bg);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(44, 44, 44, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--color-error);
}

/* Honeypot */
.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    max-width: 90%;
    text-align: center;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.toast.success {
    background: var(--color-success);
    color: #fff;
}

.toast.error {
    background: var(--color-error);
    color: #fff;
}

/* ---------- FOOTER ---------- */
.footer {
    padding: 64px 0 0;
    background: var(--color-text);
    color: #fff;
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer .logo-text {
    color: #fff;
}

.footer__tagline {
    margin-top: 12px;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}

.footer__links h4,
.footer__contact h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.7);
}

.footer__links a,
.footer__contact a {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 10px;
    transition: color var(--transition);
}

.footer__links a:hover,
.footer__contact a:hover {
    color: #fff;
}

.footer__bottom {
    padding: 24px 0;
    text-align: center;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- STICKY MOBILE CTA ---------- */
.mobile-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px 16px;
    background: rgba(245, 240, 235, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--color-border);
    z-index: 999;
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .hero__visual {
        display: none;
    }

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

    .why__grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2rem;
        --font-size-4xl: 2.5rem;
    }

    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(245, 240, 235, 0.98);
        backdrop-filter: blur(20px);
        padding: 32px 24px;
        gap: 24px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all 0.4s ease;
        border-bottom: 1px solid var(--color-border);
    }

    .nav__menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .hamburger {
        display: flex;
    }

    .btn--nav {
        display: none;
    }

    .hero {
        padding-top: calc(var(--header-height) + 40px);
        min-height: auto;
    }

    .hero__cta {
        flex-direction: column;
    }

    .hero__cta .btn {
        width: 100%;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

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

    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-card {
        padding: 24px 16px;
    }

    .stat-card__number,
    .stat-card__plus,
    .stat-card__unit,
    .stat-card__symbol {
        font-size: var(--font-size-2xl);
    }

    .process__timeline::before {
        left: 20px;
    }

    .process-step {
        gap: 20px;
    }

    .process-step__number {
        width: 40px;
        height: 40px;
        min-width: 40px;
        font-size: var(--font-size-sm);
    }

    .contact__form {
        padding: 24px;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .mobile-cta {
        display: block;
    }

    body {
        padding-bottom: 72px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .service-card {
        padding: 28px;
    }

    .lang-switcher {
        gap: 2px;
    }

    .lang-btn {
        padding: 5px 8px;
    }
}

/* ---------- FLOATING WHATSAPP ---------- */
.floating-wa {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: #FFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: all 0.3s ease;
    text-decoration: none;
}

.floating-wa:hover {
    background-color: #128C7E;
    transform: scale(1.1);
    color: #FFF;
}