/* ============================
   Variables CSS - Palette GK
   ============================ */
:root {
    /* Couleurs principales d'après l'identité GK */
    --primary-sage: #586e5a;        /* Vert sauge foncé */
    --primary-sage-dark: #455548;   /* Vert sauge plus foncé pour hover */
    --primary-sage-light: #728075;   /* Vert sauge clair */
    --accent-beige: #bfb6a9;         /* Beige rosé poudré */
    --accent-cream: #d4cdc4;         /* Blanc crème */
    --neutral-warm: #e6e0d9;         /* Beige très clair */
    --neutral-grey: #a8a09a;         /* Gris beige */
    --text-dark: #343a35;            /* Vert très foncé pour texte */
    --text-medium: #586e5a;          /* Vert moyen pour texte */
    --white: #FFFFFF;
    
    /* Gradients */
    --gradient-sage: linear-gradient(135deg, var(--primary-sage) 0%, var(--accent-cream) 100%);
    --gradient-beige: linear-gradient(135deg, var(--accent-beige) 0%, var(--neutral-grey) 100%);
    --gradient-soft: linear-gradient(135deg, var(--neutral-warm) 0%, var(--white) 100%);
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Lato', sans-serif;
    --font-logo: 'Helvetica', Arial, sans-serif;
    
    /* Spacing */
    --section-padding: clamp(60px, 8vw, 120px);
    --container-max-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   Reset et Base
   ============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ============================
   Utilitaires
   ============================ */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: clamp(40px, 6vw, 80px);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--primary-sage);
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-sage);
    border-radius: 2px;
}

.section-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto;
}

/* Boutons CTA */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 0;
    font-weight: 500;
    font-size: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.cta-button.primary {
    background: var(--primary-sage);
    color: var(--white);
    box-shadow: none;
}

.cta-button.primary:hover {
    background: var(--primary-sage-dark);
    color: var(--white);
}

.cta-button.secondary {
    background: var(--accent-beige);
    color: var(--text-dark);
    border: none;
}

.cta-button.secondary:hover {
    background: var(--primary-sage-light);
    color: var(--white);
}

.cta-button.outline {
    background: transparent;
    color: var(--primary-sage);
    border: 1px solid var(--primary-sage);
}

.cta-button.outline:hover {
    background: var(--primary-sage);
    color: var(--white);
}

/* ============================
   Header & Navigation
   ============================ */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-warm);
    transition: var(--transition);
}

.navbar {
    padding: 12px 0;
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.nav-container .cta-button {
    position: relative;
    z-index: 1001;
    background: var(--primary-sage) !important;
    color: var(--white) !important;
    border: none !important;
    pointer-events: auto !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.nav-container .cta-button:hover {
    background: var(--primary-sage-dark) !important;
    color: var(--white) !important;
    transform: none !important;
    opacity: 1 !important;
}

.logo-img {
    height: 50px;
    width: auto;
    /* Optimisation pour l'image PNG extraite du PDF */
    object-fit: contain;
    background: transparent;
    transition: transform 0.3s ease;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    margin: 0;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-sage);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 21px;
    cursor: pointer;
    padding: 2px;
    border-radius: 4px;
    transition: var(--transition);
}

.hamburger:hover {
    background: rgba(88, 110, 90, 0.1);
}

.bar {
    width: 24px;
    height: 3px;
    background: var(--primary-sage);
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

/* ============================
   Hero Section
   ============================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-soft);
    position: relative;
    padding-top: 80px;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 100%;
}

.hero-brand {
    text-align: center;
    margin-bottom: 24px;
}

.brand-name {
    max-width: 100%;
    height: auto;
    max-height: 120px;
    margin-bottom: 16px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.brand-tagline {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 400;
    color: var(--primary-sage);
    line-height: 1.3;
    margin: 0;
    text-transform: lowercase;
    font-style: italic;
    letter-spacing: 0.5px;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--text-medium);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.phone-icon {
    font-size: 1.1em;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo-container {
    width: 400px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.hero-logo {
    width: 300px;
    height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(88, 110, 90, 0.3));
    transition: transform 0.3s ease;
}

.hero-logo:hover {
    transform: scale(1.05);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ============================
   Services Section
   ============================ */
.services {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--accent-cream);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--neutral-warm);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: var(--gradient-sage);
    transition: var(--transition);
}

.service-card:hover::before {
    left: 0;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(88, 110, 90, 0.15);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-sage);
    margin-bottom: 16px;
}

.service-description {
    color: var(--text-medium);
    line-height: 1.7;
}

/* ============================
   Portfolio Section
   ============================ */
.portfolio {
    padding: var(--section-padding) 0;
    background: var(--neutral-warm);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    max-width: 100%;
}

.portfolio-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    position: relative;
    background: var(--white);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    aspect-ratio: 4/3;
    display: flex;
    flex-direction: column;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.portfolio-image {
    position: relative;
    overflow: hidden;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-warm);
    min-height: 250px;
}

.portfolio-image img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: var(--transition);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.portfolio-image video {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    transition: var(--transition);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.portfolio-item:hover .portfolio-image img,
.portfolio-item:hover .portfolio-image video {
    transform: scale(1.08);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(44, 62, 44, 0.9));
    color: var(--white);
    padding: 30px 25px 25px;
    transform: translateY(100%);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.portfolio-category {
    color: var(--accent-beige);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ============================
   About Section
   ============================ */
.about {
    padding: var(--section-padding) 0;
    background: var(--white);
}

.about .section-header {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-description p {
    margin-bottom: 20px;
    color: var(--text-medium);
    line-height: 1.8;
    font-size: 1.1rem;
    text-align: left;
}

.about-description p:last-child {
    margin-bottom: 0;
}

/* ============================
   Contact Section
   ============================ */
.contact {
    padding: var(--section-padding) 0;
    background: var(--gradient-soft);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--primary-sage);
    margin-bottom: 4px;
}

.contact-details a,
.contact-details p {
    color: var(--text-medium);
    font-size: 1rem;
}

.contact-details a:hover {
    color: var(--primary-sage);
}

/* Formulaire */
.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--neutral-warm);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-sage);
    box-shadow: 0 0 0 3px rgba(88, 110, 90, 0.1);
}

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

/* Éléments de formulaire avancés */
.field-error {
    display: block;
    color: #d32f2f;
    font-size: 0.875rem;
    margin-top: 4px;
    min-height: 1.2em;
}

.char-counter {
    display: block;
    text-align: right;
    color: var(--text-medium);
    font-size: 0.875rem;
    margin-top: 4px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1.5;
    padding: 8px 0;
}

.checkbox-input {
    width: 20px !important;
    height: 20px !important;
    margin: 0 !important;
    margin-top: 2px !important;
    padding: 0 !important;
    flex-shrink: 0;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    border: 2px solid var(--primary-sage);
    border-radius: 0;
    background: var(--white);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.checkbox-input:checked {
    background: var(--primary-sage);
    border-color: var(--primary-sage);
}

.checkbox-input:checked::before {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-weight: bold;
    font-size: 14px;
    line-height: 1;
}

.checkbox-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(88, 110, 90, 0.3);
}

.checkbox-input:hover {
    border-color: var(--primary-sage-dark);
}

.form-submit {
    position: relative;
    min-height: 50px;
}

.button-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.button-loader svg {
    animation: spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.form-note {
    text-align: center;
    color: var(--text-medium);
    margin-top: 20px;
    font-style: italic;
}

/* ============================
   Footer
   ============================ */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-logo {
    max-height: 50px;
    max-width: 200px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-tagline {
    color: var(--accent-beige);
    font-style: italic;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-section h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: var(--accent-beige);
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-section a {
    color: var(--white);
    opacity: 0.8;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-beige);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-sage);
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-beige);
    color: var(--text-dark);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--primary-sage);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-legal {
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: var(--white);
    opacity: 0.7;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-legal a:hover {
    opacity: 1;
}

.footer-copyright {
    color: var(--accent-beige);
    font-size: 0.9rem;
}

/* ============================
   Animations et Effets
   ============================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* ============================
   Responsive Design
   ============================ */

/* Tablettes */
@media (max-width: 768px) {
    :root {
        --section-padding: clamp(40px, 6vw, 80px);
    }
    
    .nav-container .cta-button {
        display: inline-flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        z-index: 1001 !important;
        font-size: 0.8rem;
        padding: 8px 14px;
        border-radius: 6px;
        white-space: nowrap;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 60px;
        transition: var(--transition);
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger {
        background: rgba(88, 110, 90, 0.1);
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-logo-container {
        width: 300px;
        height: 300px;
    }
    
    .hero-logo {
        width: 250px;
        height: 250px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .portfolio-item {
        aspect-ratio: 3/2;
    }
    
    .portfolio-image {
        min-height: 200px;
    }
    
    .about .section-header {
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .brand-name {
        max-height: 80px;
        margin-bottom: 12px;
    }
    
    .brand-tagline {
        font-size: clamp(1.4rem, 4vw, 1.8rem);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobiles */
@media (max-width: 480px) {
    .nav-container > a.cta-button.primary {
        font-size: 0.8rem !important;
        padding: 8px 18px !important;
        min-height: 0 !important;
        font-weight: 500 !important;
        width: auto !important;
        max-width: 95vw !important;
        border-radius: 6px !important;
        letter-spacing: 0.01em !important;
        box-shadow: none !important;
        margin: 0 !important;
        line-height: 1.2 !important;
        height: auto !important;
        white-space: nowrap !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    
    .hero-logo-container {
        width: 250px;
        height: 250px;
    }
    
    .hero-logo {
        width: 200px;
        height: 200px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-legal {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .footer-logo {
        max-height: 40px;
        max-width: 150px;
    }
}

/* Très petits écrans */
@media (max-width: 360px) {
    .hero-logo-container {
        width: 200px;
        height: 200px;
    }
    
    .hero-logo {
        width: 150px;
        height: 150px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 25px 15px;
    }
    
    .portfolio-grid {
        gap: 15px;
    }
    
    .portfolio-item {
        aspect-ratio: 4/3;
    }
    
    .portfolio-image {
        min-height: 180px;
    }
    
    .footer-logo {
        max-height: 35px;
        max-width: 120px;
    }
}