/* ============================================================
   ATLAS WORKING - Stylesheet
   Brand Identity: Édition Végétale & Zeste (Sans Bleu, Sans Or)
   ============================================================ */

/* ========== CSS VARIABLES ========== */
:root {
    /* Colors - Palette Végétale & Zeste */
    --color-primary: #2F4F4F;          /* Vert Sombre / Forêt */
    --color-primary-light: #3d6b6b;    /* Vert forêt éclairci */
    --color-primary-dark: #1f3a3a;     /* Vert très sombre */
    --color-accent: #99CC33;           /* Vert Zeste / Chartreuse */
    --color-accent-light: #aedb52;     /* Chartreuse clair */
    --color-accent-dark: #7fb32a;      /* Chartreuse sombre (hover) */
    --color-text: #2D3748;             /* Graphite / Charbon */
    --color-text-light: #4a5568;
    --color-text-lighter: #718096;
    --color-bg: #F4F6F0;               /* Gris Naturel / Lin */
    --color-bg-alt: #eaeee3;           /* Lin légèrement plus foncé */
    --color-bg-dark: #223a3a;          /* Fond sombre footer */
    --color-border: #dde3d4;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-card: #ffffff;
    --color-shadow: rgba(47, 79, 79, 0.08);
    --color-shadow-lg: rgba(47, 79, 79, 0.15);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --section-padding: 100px 0;
    --container-max: 1200px;

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

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

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

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

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

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

ul {
    list-style: none;
}

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

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

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

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

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    letter-spacing: 0.3px;
}

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

.btn--primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(153, 204, 51, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.4);
}

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

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ========== SECTION HEADERS ========== */
.section-tag {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-description {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 600px;
    line-height: 1.7;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header .section-description {
    margin-left: auto;
    margin-right: auto;
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 30px var(--color-shadow);
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1001;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-accent);
    color: var(--color-white);
    font-weight: 800;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    letter-spacing: 1px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    transition: var(--transition);
}

.header.scrolled .logo-text {
    color: var(--color-primary);
}

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

.nav__link {
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    border-radius: var(--radius-xl);
    transition: var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.12);
}

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

.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active {
    color: var(--color-accent);
    background: rgba(153, 204, 51, 0.08);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.4rem;
    color: var(--color-white);
    z-index: 1001;
}

.header.scrolled .nav__toggle,
.header.scrolled .nav__close {
    color: var(--color-primary);
}

/* Header Social Links */
.nav__socials {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-right: 16px;
}

.nav__socials a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.8rem;
    transition: var(--transition);
}

.nav__socials a:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.header.scrolled .nav__socials a {
    color: var(--color-text-light);
}

.header.scrolled .nav__socials a:hover {
    color: var(--color-accent);
    background: rgba(153, 204, 51, 0.08);
}

/* ============================================================
   HOME / HERO
   ============================================================ */
.home {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.home__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 55%, var(--color-primary-dark) 100%);
    z-index: -2;
}

.home__bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(153, 204, 51, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(153, 204, 51, 0.08) 0%, transparent 50%);
}

.home__bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(153, 204, 51, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.home__overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2399cc33' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: -1;
}

.home__container {
    padding-top: 120px;
    padding-bottom: 80px;
}

.home__subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.home__title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: 24px;
    max-width: 700px;
}

.text-accent {
    color: var(--color-accent);
}

.home__description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 550px;
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.home__stats {
    display: flex;
    gap: 50px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 8px;
}

.stat__label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.home__scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
    padding: var(--section-padding);
    background: var(--color-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px var(--color-shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(153, 204, 51, 0.1), rgba(153, 204, 51, 0.05));
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 1.5rem;
    color: var(--color-accent);
    transition: var(--transition);
}

.service-card:hover .service-card__icon {
    background: var(--color-accent);
    color: var(--color-white);
    transform: scale(1.05);
}

.service-card__title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.service-card__subtitle {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 16px;
}

.service-card__description {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-card__features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.feature-tag {
    padding: 5px 14px;
    background: var(--color-bg-alt);
    color: var(--color-text-light);
    font-size: 0.78rem;
    font-weight: 500;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.9rem;
}

.service-card__link i {
    transition: var(--transition);
}

.service-card__link:hover {
    gap: 12px;
}

/* ============================================================
   WHY US
   ============================================================ */
.why-us {
    padding: var(--section-padding);
    background: var(--color-bg-alt);
}

.why-us__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

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

.why-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 40px var(--color-shadow);
    border-color: rgba(153, 204, 51, 0.2);
}

.why-card__number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(153, 204, 51, 0.1);
    position: absolute;
    top: 16px;
    right: 20px;
    line-height: 1;
}

.why-card__icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-white);
    border-radius: 50%;
    margin: 0 auto 24px;
    font-size: 1.4rem;
    transition: var(--transition);
}

.why-card:hover .why-card__icon {
    transform: scale(1.1) rotate(5deg);
}

.why-card__title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.why-card__description {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Manifest Section */
.why-us__manifest {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    padding: 60px 50px;
    position: relative;
    overflow: hidden;
}

.why-us__manifest::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(153, 204, 51, 0.1), transparent 70%);
    border-radius: 50%;
}

.manifest__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.manifest__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    font-size: 1.2rem;
    margin-bottom: 24px;
}

.manifest__title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
}

.manifest__text {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.8;
    margin-bottom: 16px;
}

.manifest__text em {
    color: var(--color-accent);
    font-style: italic;
}

.manifest__content .btn {
    margin-top: 16px;
}

/* ============================================================
   PROJECTS
   ============================================================ */
.projects {
    padding: var(--section-padding);
    background: var(--color-bg);
}

.projects__filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 10px 24px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-light);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.filter-btn:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: rgba(153, 204, 51, 0.05);
}

.filter-btn.active {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.project-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 50px var(--color-shadow-lg);
    border-color: transparent;
}

.project-card.hidden {
    display: none;
}

.project-card__image {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.project-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.3);
}

.project-card[data-category="resort"] .project-card__placeholder {
    background: linear-gradient(135deg, #6d9e3a, #2d5a27);
}

.project-card[data-category="institution"] .project-card__placeholder {
    background: linear-gradient(135deg, #3d6b45, #1f3a2a);
}

.project-card[data-category="etablissement"] .project-card__placeholder {
    background: linear-gradient(135deg, #4a5568, #2d3748);
}

.project-card[data-category="acoustique"] .project-card__placeholder {
    background: linear-gradient(135deg, #2f4f4f, #1f3a3a);
}

.project-card__overlay {
    position: absolute;
    top: 16px;
    left: 16px;
}

.project-card__category {
    padding: 6px 16px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    color: var(--color-white);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius-xl);
}

.project-card__info {
    padding: 20px 24px;
}

.project-card__title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.project-card__location {
    font-size: 0.85rem;
    color: var(--color-text-lighter);
    display: flex;
    align-items: center;
    gap: 6px;
}

.project-card__location i {
    color: var(--color-accent);
    font-size: 0.75rem;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
    padding: var(--section-padding);
    background: var(--color-bg-alt);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about__description {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about__values {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.value-item__icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(153, 204, 51, 0.15), rgba(153, 204, 51, 0.05));
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 1rem;
}

.value-item__content h4 {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
    font-size: 1rem;
}

.value-item__content p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.about__visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.about__image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.about__image-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(153, 204, 51, 0.15), transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(153, 204, 51, 0.1), transparent 50%);
}

.about__logo-large {
    text-align: center;
    position: relative;
    z-index: 1;
}

.about__logo-large span {
    font-family: var(--font-display);
    font-size: 5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    display: block;
}

.about__logo-large p {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 8px;
    letter-spacing: 3px;
}

.about__experience {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 16px 30px;
    border-radius: var(--radius-xl);
    margin-top: -30px;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(153, 204, 51, 0.3);
}

.experience-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
}

.experience-text {
    font-size: 0.9rem;
    font-weight: 500;
}

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

.contact__wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 40px var(--color-shadow);
}

.contact__info {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    padding: 40px 36px;
    color: var(--color-white);
}

.contact__info-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.contact__info-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact__info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact__info-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(153, 204, 51, 0.15);
    border-radius: var(--radius-md);
    color: var(--color-accent);
    font-size: 0.95rem;
}

.contact__info-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-accent);
}

.contact__info-text p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.6;
}

.contact__form {
    padding: 40px 36px;
}

.contact__form-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 30px;
}

.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form__group {
    display: flex;
    flex-direction: column;
}

.form__group--full {
    margin-bottom: 24px;
}

.form__group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form__group input,
.form__group select,
.form__group textarea {
    padding: 12px 16px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: var(--transition);
    font-size: 0.95rem;
}

.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(153, 204, 51, 0.1);
}

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

.form__group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
    cursor: pointer;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--color-bg-dark);
    color: var(--color-white);
    padding: 70px 0 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer__description {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    max-width: 280px;
}

.footer__heading {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-white);
    position: relative;
}

.footer__heading::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--color-accent);
}

.footer__list li {
    margin-bottom: 10px;
}

.footer__list a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
}

.footer__list a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer__contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer__contact-item i {
    color: var(--color-accent);
    font-size: 0.85rem;
    width: 16px;
    text-align: center;
}

.footer__social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer__bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.35);
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    font-size: 1rem;
    box-shadow: 0 4px 15px rgba(153, 204, 51, 0.35);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent-dark);
    transform: translateY(-3px);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 1024px) {
    .about__content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 70px 0;
    }

    /* Mobile Navigation */
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-bg);
        box-shadow: -5px 0 30px var(--color-shadow-lg);
        padding: 80px 30px 30px;
        transition: var(--transition-slow);
        z-index: 1000;
    }

    .nav__menu.active {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .nav__link {
        color: var(--color-text);
        padding: 14px 20px;
        border-radius: var(--radius-md);
        font-size: 1rem;
    }

    .nav__link:hover,
    .nav__link.active {
        background: rgba(153, 204, 51, 0.08);
        color: var(--color-accent);
    }

    .nav__toggle,
    .nav__close {
        display: block;
    }

    .nav__socials {
        gap: 4px;
        margin-right: 8px;
    }

    .nav__socials a {
        width: 30px;
        height: 30px;
        font-size: 0.75rem;
    }

    .nav__close {
        position: absolute;
        top: 24px;
        right: 24px;
        font-size: 1.5rem;
        color: var(--color-text);
    }

    /* Mobile Hero */
    .home__title {
        font-size: 2rem;
    }

    .home__stats {
        gap: 24px;
        flex-wrap: wrap;
    }

    .stat__number {
        font-size: 2rem;
    }

    /* Mobile Grid */
    .services__grid {
        grid-template-columns: 1fr;
    }

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

    .why-us__grid {
        grid-template-columns: 1fr 1fr;
    }

    .why-us__manifest {
        padding: 40px 28px;
    }

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

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact__info,
    .contact__form {
        padding: 30px 24px;
    }
}

@media (max-width: 480px) {
    .home__buttons {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .projects__filters {
        gap: 8px;
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }

    .why-us__grid {
        grid-template-columns: 1fr;
    }

    .about__experience {
        padding: 12px 24px;
    }

    .experience-number {
        font-size: 1.5rem;
    }
}