/* ===================================
   AF Consulting & Solutions - Styles
   Charte graphique premium sombre
   =================================== */

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Couleurs principales - inspirées du logo */
    --color-bg-primary: #050812;
    --color-bg-secondary: #0A0F18;
    --color-bg-card: #151821;

    --color-text-primary: #D3C8B5;
    --color-text-secondary: #CFC4AE;
    --color-text-accent: #E1D5C0;
    --color-text-muted: #8A8578;

    --color-accent: #E1D5C0;
    --color-accent-hover: #EDE3D3;

    --color-border: rgba(211, 200, 181, 0.15);
    --color-border-light: rgba(211, 200, 181, 0.08);

    /* Typographie */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Montserrat', 'Inter', sans-serif;

    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3.5rem;
    --spacing-xl: 5rem;

    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--color-text-accent);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--color-accent-hover);
}

/* === LAYOUT === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(5, 8, 18, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-accent);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
    display: block;
    filter: drop-shadow(0 2px 8px rgba(225, 213, 192, 0.3));
    transition: var(--transition-base);
}

.logo-img:hover {
    filter: drop-shadow(0 4px 12px rgba(225, 213, 192, 0.5));
}

.logo-text {
    white-space: nowrap;
}


.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-menu a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: var(--transition-base);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* === BUTTONS === */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.95rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    border: 1px solid transparent;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(225, 213, 192, 0.3);
}

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

.btn-secondary:hover {
    background: var(--color-bg-card);
    border-color: var(--color-accent);
    color: var(--color-accent-hover);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

/* === HERO SECTION === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(21, 24, 33, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(21, 24, 33, 0.4) 0%, transparent 50%);
    z-index: 0;
}

.tech-lines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    opacity: 0.1;
    z-index: 1;
}

.line {
    position: absolute;
    background: var(--color-accent);
    height: 1px;
}

.line-1 {
    top: 20%;
    left: -10%;
    width: 40%;
    transform: rotate(-15deg);
}

.line-2 {
    top: 60%;
    right: -10%;
    width: 50%;
    transform: rotate(25deg);
}

.line-3 {
    bottom: 30%;
    left: 20%;
    width: 30%;
    transform: rotate(-35deg);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-logo {
    margin-bottom: 2rem;
    animation: fadeInDown 1s ease-out;
}

.hero-logo img {
    height: 120px;
    width: auto;
    display: inline-block;
    filter: drop-shadow(0 4px 20px rgba(225, 213, 192, 0.2));
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

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


.hero-title {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-text-accent) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* === SECTION HEADERS === */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-tag {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 20px;
}

.section-title {
    margin-bottom: 1rem;
}

/* === ABOUT SECTION === */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.about-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 900px) {
    .about-grid {
        grid-template-columns: 350px 1fr;
    }
}

.about-image-wrapper {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5);
}

.about-image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    border: 1px solid rgba(225, 213, 192, 0.1);
    z-index: 2;
    pointer-events: none;
}

.about-photo {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    transition: transform 0.5s ease;
    /* Harmonize photo with dark background */
    filter: brightness(0.9) contrast(1.1);
}

.about-image-wrapper:hover .about-photo {
    transform: scale(1.03);
    filter: brightness(1) contrast(1);
}

.about-text {
    width: 100%;
}

.lead {
    font-size: 1.25rem;
    color: var(--color-text-accent);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    transition: var(--transition-base);
}

.stat-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    color: var(--color-accent);
}

.stat-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
    filter: drop-shadow(0 2px 8px rgba(225, 213, 192, 0.2));
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* === PROBLEMS SECTION === */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

.problem-card {
    padding: 1.75rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.problem-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.problem-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.problem-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.problem-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* === VALUE SECTION === */
.value {
    background: var(--color-bg-secondary);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    align-items: stretch;
}

.value-card {
    padding: 2rem 1.75rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    position: relative;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.value-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.value-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.2;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    line-height: 1;
}

.value-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.value-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* === OFFERS SECTION === */
.offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: stretch;
    grid-auto-rows: 1fr;
}

.offer-card {
    padding: 2rem 1.75rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    position: relative;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.offer-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.offer-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(21, 24, 33, 0.8) 100%);
}

.offer-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--color-accent);
    color: var(--color-bg-primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.offer-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.offer-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.offer-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

.offer-description {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.offer-features {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.offer-features li {
    padding: 0.6rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border-light);
}

.offer-features li:last-child {
    border-bottom: none;
}

.offer-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* === PROCESS SECTION === */
.process {
    background: var(--color-bg-secondary);
}

.process-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.process-step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
}

.process-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--color-bg-card);
    border: 2px solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.process-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.process-content p {
    color: var(--color-text-secondary);
    margin: 0;
}

.process-connector {
    width: 2px;
    height: 40px;
    background: var(--color-border);
    margin-left: 29px;
    margin-bottom: 1rem;
}

/* === USE CASES SECTION === */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: stretch;
    grid-auto-rows: 1fr;
}

.use-case-card {
    padding: 2.5rem 2rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.use-case-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.use-case-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 1.5rem;
    color: var(--color-accent);
}

.use-case-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
    filter: drop-shadow(0 2px 8px rgba(225, 213, 192, 0.15));
}

.use-case-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.use-case-subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.use-case-features {
    list-style: none;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.use-case-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.use-case-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.use-case-result {
    padding: 1rem;
    background: rgba(225, 213, 192, 0.05);
    border-left: 3px solid var(--color-accent);
    border-radius: 4px;
    font-size: 0.95rem;
}

.use-case-result strong {
    color: var(--color-accent);
}

/* === CONTACT SECTION === */
.contact {
    background: var(--color-bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

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

.contact-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.contact-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-benefits {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.contact-benefit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-secondary);
}

.contact-benefit svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

/* === FORM === */
.contact-form {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 3rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 0.5rem;
    color: var(--color-text-accent);
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-base);
    width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-bg-secondary);
}

.form-group input::placeholder,
.form-group select::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

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

/* === FOOTER === */
.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--color-text-accent);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.footer-column ul li a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin: 0;
}

/* === RESPONSIVE === */
.footer-social {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 50%;
    color: var(--color-text-secondary);
    transition: var(--transition-base);
}

.social-icon:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.social-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .logo-text {
        font-size: 0.95rem;
    }

    .logo-img {
        height: 32px;
    }

    .hero-logo img {
        height: 80px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .contact-form {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .process-step {
        gap: 1rem;
    }

    .process-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }

    .process-connector {
        margin-left: 24px;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .contact-benefits {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* === CERTIFICATION QUALIOPI === */
.certification-badge {
    margin-top: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.25rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

@media (min-width: 900px) {
    .certification-badge {
        grid-column: 2;
    }
}

.cert-logo-wrapper {
    background: #FFFFFF;
    padding: 10px 15px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.cert-logo {
    height: 60px;
    width: auto;
    display: block;
}

.cert-text {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

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

/* Footer Integration */
.footer-certification-block {
    margin-top: 2rem;
    display: inline-block;
}

.cert-logo-wrapper.small {
    padding: 8px 12px;
}

.cert-logo-wrapper.small .cert-logo {
    height: 45px;
}