/* ============================================================
   SANRAKSHAN FUELS PVT LTD — WEBSITE STYLES
   Colors: Dark Green #1F5D3A | Light Green #5FAE6D
           Beige #E8E2D0 | White #FFFFFF | Charcoal #2B2B2B
   Fonts:  Poppins (headings) | Inter (body)
============================================================ */

/* ---- CSS VARIABLES ---- */
:root {
    --green-dark:   #1F5D3A;
    --green-mid:    #2a7a4e;
    --green-light:  #5FAE6D;
    --green-pale:   #e8f5ec;
    --beige:        #E8E2D0;
    --beige-dark:   #d8d0b8;
    --white:        #FFFFFF;
    --charcoal:     #2B2B2B;
    --charcoal-mid: #444444;
    --gray:         #666666;
    --gray-light:   #f4f4f4;
    --border:       #e0e0e0;

    --font-head:    'Poppins', sans-serif;
    --font-body:    'Inter', sans-serif;

    --shadow-xs:    0 1px 4px rgba(0,0,0,0.06);
    --shadow-sm:    0 2px 10px rgba(0,0,0,0.08);
    --shadow-md:    0 6px 24px rgba(0,0,0,0.10);
    --shadow-lg:    0 12px 48px rgba(0,0,0,0.14);
    --shadow-green: 0 8px 32px rgba(31,93,58,0.25);

    --radius:       12px;
    --radius-lg:    20px;
    --radius-full:  999px;
    --transition:   all 0.3s ease;
    --transition-s: all 0.2s ease;

    --max-w:        1200px;
    --nav-h:        76px;
}

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

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

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

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

h1,h2,h3,h4,h5 { font-family: var(--font-head); font-weight: 700; line-height: 1.2; }

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

.section {
    padding: 100px 0;
}

/* ============================================================
   NAVBAR
============================================================ */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--nav-h);
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}
.navbar.scrolled {
    background: rgba(255,255,255,0.97);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo-img {
    height: 52px;
    width: auto;
    border-radius: 10px;
    display: block;
    transition: var(--transition-s);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-link {
    padding: 8px 14px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: rgba(255,255,255,0.9);
    transition: var(--transition-s);
}
.navbar.scrolled .nav-link { color: var(--charcoal-mid); }
.nav-link:hover { background: rgba(255,255,255,0.15); color: white; }
.navbar.scrolled .nav-link:hover { background: var(--green-pale); color: var(--green-dark); }

.nav-cta {
    background: var(--white);
    color: var(--green-dark) !important;
    font-weight: 600;
    padding: 9px 20px;
    margin-left: 8px;
}
.nav-cta:hover { background: var(--beige) !important; color: var(--green-dark) !important; }
.navbar.scrolled .nav-cta { background: var(--green-dark); color: var(--white) !important; }
.navbar.scrolled .nav-cta:hover { background: var(--green-mid) !important; color: var(--white) !important; }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 24px; height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--transition-s);
}
.navbar.scrolled .hamburger span { background: var(--charcoal); }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 999;
    padding: 16px 0 24px;
    transform: translateY(-10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}
.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
}
.mobile-menu li { border-bottom: 1px solid var(--border); }
.mobile-nav-link {
    display: block;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 500;
    color: var(--charcoal);
    transition: var(--transition-s);
}
.mobile-nav-link:hover { background: var(--green-pale); color: var(--green-dark); padding-left: 36px; }

/* ============================================================
   BUTTONS
============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
}
.btn-lg { padding: 15px 36px; font-size: 16px; }
.btn-sm { padding: 9px 20px; font-size: 13px; }
.btn-full { width: 100%; }

.btn-primary {
    background: var(--green-dark);
    color: var(--white);
    border-color: var(--green-dark);
}
.btn-primary:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    transform: translateY(-2px);
    box-shadow: var(--shadow-green);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.7);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--green-dark);
    border-color: var(--green-dark);
}
.btn-outline:hover {
    background: var(--green-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-green);
}

.btn-white {
    background: var(--white);
    color: var(--green-dark);
    border-color: var(--white);
}
.btn-white:hover {
    background: var(--beige);
    border-color: var(--beige);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25D366;
    color: var(--white);
    border-color: #25D366;
    margin-top: 24px;
}
.btn-whatsapp:hover {
    background: #1ebe5d;
    border-color: #1ebe5d;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37,211,102,0.35);
}

/* ============================================================
   SECTION HEADERS
============================================================ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-tag {
    display: inline-block;
    background: var(--green-pale);
    color: var(--green-dark);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 14px;
}
.section-tag.light {
    background: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.9);
}
.section-header h2 {
    font-size: clamp(28px, 4vw, 42px);
    color: var(--charcoal);
    margin-bottom: 14px;
}
.section-desc {
    color: var(--gray);
    font-size: 17px;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================================
   SCROLL ANIMATIONS
============================================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.30s; }

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

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg,
            #0d2e1a 0%,
            #1F5D3A 35%,
            #2a7a4e 65%,
            #173d28 100%
        );
}

/* SVG leaf/grid pattern overlay */
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        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='%23ffffff' 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");
    background-size: 60px 60px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 60% 50%, rgba(95,174,109,0.15) 0%, transparent 70%);
}

/* Floating particles */
.hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.hero-particles span {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    animation: float-particle 8s ease-in-out infinite;
}
.hero-particles span:nth-child(1) { width:80px; height:80px; top:15%; left:8%; animation-delay:0s; }
.hero-particles span:nth-child(2) { width:50px; height:50px; top:60%; left:15%; animation-delay:2s; }
.hero-particles span:nth-child(3) { width:120px; height:120px; top:25%; right:12%; animation-delay:1s; }
.hero-particles span:nth-child(4) { width:40px; height:40px; top:70%; right:20%; animation-delay:3s; }
.hero-particles span:nth-child(5) { width:90px; height:90px; bottom:20%; left:40%; animation-delay:1.5s; }
.hero-particles span:nth-child(6) { width:60px; height:60px; top:40%; left:50%; animation-delay:2.5s; }

@keyframes float-particle {
    0%,100% { transform: translateY(0) rotate(0deg); opacity: 0.5; }
    50%      { transform: translateY(-30px) rotate(180deg); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: var(--nav-h);
    padding-bottom: 60px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}
.badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--green-light);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%,100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
    font-size: clamp(36px, 6vw, 68px);
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: -0.5px;
    animation: fade-up 0.9s ease both;
}
.title-highlight {
    color: var(--green-light);
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: rgba(255,255,255,0.78);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fade-up 0.9s 0.15s ease both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fade-up 0.9s 0.3s ease both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-lg);
    padding: 24px 40px;
    backdrop-filter: blur(12px);
    display: inline-flex;
    animation: fade-up 0.9s 0.45s ease both;
}
.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 32px;
}
.stat-num {
    font-family: var(--font-head);
    font-weight: 800;
    font-size: 32px;
    color: var(--white);
    line-height: 1;
    margin-bottom: 4px;
}
.stat-lbl {
    font-size: 12px;
    color: rgba(255,255,255,0.65);
    font-weight: 500;
    letter-spacing: 0.5px;
}
.stat-sep {
    width: 1px;
    height: 48px;
    background: rgba(255,255,255,0.2);
}

/* Scroll down indicator */
.scroll-down {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.55);
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    animation: fade-up 1s 0.8s ease both;
    transition: var(--transition-s);
}
.scroll-down:hover { color: rgba(255,255,255,0.9); }
.scroll-chevron {
    width: 20px; height: 20px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    animation: bounce-down 1.6s ease-in-out infinite;
}
@keyframes bounce-down {
    0%,100% { transform: rotate(45deg) translateY(0); }
    50%      { transform: rotate(45deg) translateY(6px); }
}
@keyframes fade-up {
    from { opacity:0; transform: translateY(24px); }
    to   { opacity:1; transform: translateY(0); }
}

/* ============================================================
   ABOUT SECTION
============================================================ */
.about-section {
    background: var(--white);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}
.about-text h2 { font-size: clamp(26px, 3.5vw, 38px); margin-bottom: 20px; }
.about-lead {
    font-size: 18px;
    font-weight: 500;
    color: var(--charcoal);
    margin-bottom: 18px;
    line-height: 1.65;
}
.about-text p {
    color: var(--gray);
    margin-bottom: 16px;
    font-size: 15.5px;
    line-height: 1.75;
}
.about-highlights {
    margin: 28px 0 32px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.about-highlights li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--charcoal-mid);
    font-weight: 500;
}
.check-icon {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--green-pale);
    color: var(--green-dark);
    font-size: 12px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.about-feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.feature-card {
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    transition: var(--transition);
}
.feature-card:hover {
    border-color: var(--green-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.fc-icon {
    width: 52px; height: 52px;
    margin: 0 auto 14px;
    background: var(--green-pale);
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    color: var(--green-dark);
}
.fc-icon svg { width: 24px; height: 24px; }
.feature-card h4 { font-size: 15px; margin-bottom: 6px; color: var(--charcoal); }
.feature-card p { font-size: 13px; color: var(--gray); line-height: 1.5; }

/* ============================================================
   PRODUCTS SECTION
============================================================ */
.products-section {
    background: var(--gray-light);
}
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    align-items: stretch;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-sm);
    border: 1.5px solid var(--border);
    transition: var(--transition);
    overflow: hidden;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--green-light);
}
.product-card.featured {
    background: var(--green-dark);
    border-color: var(--green-dark);
    color: white;
}
.product-card.featured:hover {
    border-color: var(--green-light);
    box-shadow: var(--shadow-green);
}

.product-popular-badge {
    position: absolute;
    top: 20px; right: 20px;
    background: var(--green-light);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    padding: 5px 12px;
    border-radius: var(--radius-full);
}

.product-icon-wrap {
    width: 64px; height: 64px;
    border-radius: 18px;
    background: var(--green-pale);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 24px;
    color: var(--green-dark);
    transition: var(--transition-s);
}
.product-card.featured .product-icon-wrap {
    background: rgba(255,255,255,0.15);
    color: var(--white);
}
.product-card:hover .product-icon-wrap { transform: scale(1.08); }
.product-icon-wrap svg { width: 30px; height: 30px; }

.product-body { flex: 1; }
.product-body h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--charcoal);
}
.product-card.featured .product-body h3 { color: var(--white); }
.product-body > p {
    font-size: 14.5px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 24px;
}
.product-card.featured .product-body > p { color: rgba(255,255,255,0.75); }

.product-details { margin-bottom: 28px; display: flex; flex-direction: column; gap: 16px; }
.pd-block h4 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--green-dark);
    margin-bottom: 8px;
}
.product-card.featured .pd-block h4 { color: var(--green-light); }
.pd-block ul { display: flex; flex-direction: column; gap: 5px; }
.pd-block li {
    font-size: 13.5px;
    color: var(--charcoal-mid);
    padding-left: 14px;
    position: relative;
}
.pd-block li::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--green-light);
}
.product-card.featured .pd-block li { color: rgba(255,255,255,0.8); }
.product-card.featured .pd-block li::before { background: var(--green-light); }

.product-btn { margin-top: auto; }

/* ============================================================
   INDUSTRIES SECTION
============================================================ */
.industries-section {
    background: var(--white);
}
.industries-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.industry-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    height: 200px;
    cursor: default;
    box-shadow: var(--shadow-sm);
}
.ind-photo {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
}
.industry-card:hover .ind-photo { transform: scale(1.08); }
.ind-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0.15) 55%, transparent 100%);
    transition: var(--transition);
}
.industry-card:hover .ind-overlay {
    background: linear-gradient(to top, rgba(31,93,58,0.85) 0%, rgba(31,93,58,0.35) 55%, transparent 100%);
}
.ind-label {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 16px;
}
.ind-label h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    line-height: 1.35;
    text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* ============================================================
   SUSTAINABILITY SECTION
============================================================ */
.sustainability-section {
    background: var(--green-dark);
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.sustainability-section::before {
    content: '';
    position: absolute;
    top: -100px; right: -100px;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: rgba(95,174,109,0.08);
    pointer-events: none;
}
.sustainability-section::after {
    content: '';
    position: absolute;
    bottom: -80px; left: -80px;
    width: 380px; height: 380px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
    pointer-events: none;
}

.sustain-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.sustain-content h2 {
    font-size: clamp(26px, 3.5vw, 40px);
    color: var(--white);
    margin: 14px 0 20px;
}
.sustain-content > p {
    color: rgba(255,255,255,0.75);
    font-size: 15.5px;
    line-height: 1.75;
    margin-bottom: 36px;
}

.sustain-benefits { display: flex; flex-direction: column; gap: 20px; }
.benefit-row { display: flex; gap: 16px; align-items: flex-start; }
.benefit-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--green-light);
    flex-shrink: 0;
    margin-top: 6px;
}
.benefit-info h4 { font-size: 15px; color: var(--white); margin-bottom: 3px; }
.benefit-info p  { font-size: 13.5px; color: rgba(255,255,255,0.6); line-height: 1.55; }

/* Sustainability Visual */
.sustain-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
}
.sustain-ring-outer {
    width: 280px; height: 280px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    animation: rotate-slow 20s linear infinite;
}
.sustain-ring-mid {
    width: 220px; height: 220px;
    border-radius: 50%;
    border: 2px solid rgba(95,174,109,0.3);
    display: flex; align-items: center; justify-content: center;
    animation: rotate-slow 15s linear infinite reverse;
}
.sustain-ring-inner {
    width: 160px; height: 160px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    border: 2px solid rgba(95,174,109,0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    animation: none;
}
.sustain-pct {
    font-family: var(--font-head);
    font-weight: 800;
    font-size: 30px;
    color: var(--white);
    line-height: 1;
}
.sustain-lbl {
    font-size: 12px;
    color: var(--green-light);
    font-weight: 600;
    letter-spacing: 0.5px;
}
@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.sustain-float {
    position: absolute;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    padding: 10px 18px;
    font-size: 13px;
    color: white;
    font-weight: 500;
    white-space: nowrap;
}
.sf-1 { top: 20px; right: -20px; }
.sf-2 { bottom: 60px; right: -40px; }
.sf-3 { bottom: 20px; left: -30px; }

/* ============================================================
   WHY CHOOSE US
============================================================ */
.why-section { background: var(--gray-light); }
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.why-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px 24px;
    border: 1.5px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.why-card:hover {
    border-color: var(--green-light);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.why-card:hover .why-num { color: var(--green-dark); }
.why-num {
    font-family: var(--font-head);
    font-size: 40px;
    font-weight: 800;
    color: var(--border);
    line-height: 1;
    margin-bottom: 12px;
    transition: var(--transition-s);
}
.why-icon {
    width: 44px; height: 44px;
    background: var(--green-pale);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--green-dark);
    margin-bottom: 14px;
    transition: var(--transition-s);
}
.why-card:hover .why-icon { background: var(--green-dark); color: white; }
.why-icon svg { width: 22px; height: 22px; }
.why-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--charcoal); }
.why-card p  { font-size: 13.5px; color: var(--gray); line-height: 1.6; }

/* ============================================================
   CONTACT SECTION
============================================================ */
.contact-section { background: var(--white); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-size: 24px;
    color: var(--charcoal);
    margin-bottom: 14px;
}
.contact-info > p {
    color: var(--gray);
    font-size: 15px;
    line-height: 1.75;
    margin-bottom: 32px;
}
.contact-details { display: flex; flex-direction: column; gap: 18px; margin-bottom: 4px; }
.cd-row {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.cd-icon {
    width: 44px; height: 44px;
    background: var(--green-pale);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--green-dark);
    flex-shrink: 0;
}
.cd-icon svg { width: 20px; height: 20px; }
.cd-row h4 { font-size: 13px; color: var(--gray); font-weight: 600; margin-bottom: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.cd-row p  { font-size: 15px; color: var(--charcoal); font-weight: 500; }

/* Contact Form */
.contact-form-wrap {
    background: var(--white);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--charcoal-mid);
    letter-spacing: 0.2px;
}
.req { color: var(--green-dark); }
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 13px 16px;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 15px;
    color: var(--charcoal);
    background: var(--white);
    transition: var(--transition-s);
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--green-dark);
    box-shadow: 0 0 0 3px rgba(31,93,58,0.08);
}
.form-group input.error,
.form-group textarea.error { border-color: #e53e3e; }
.form-group textarea { resize: vertical; min-height: 110px; }
.field-error { font-size: 12px; color: #e53e3e; font-weight: 500; min-height: 16px; }
::placeholder { color: #bbb; }

.form-success {
    display: none;
    text-align: center;
    padding: 48px 20px;
}
.success-check {
    width: 64px; height: 64px;
    border-radius: 50%;
    background: var(--green-pale);
    color: var(--green-dark);
    font-size: 28px;
    font-weight: 800;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
}
.form-success h3 { font-size: 22px; color: var(--charcoal); margin-bottom: 10px; }
.form-success p  { color: var(--gray); font-size: 15px; }

/* ============================================================
   FOOTER
============================================================ */
.footer {
    background: var(--charcoal);
    color: rgba(255,255,255,0.75);
    padding: 70px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 52px;
}

.footer-logo {
    margin-bottom: 16px;
}

.footer-logo-img {
    height: 64px;
    width: auto;
    border-radius: 10px;
    display: block;
}
.footer-brand-col p {
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 10px;
}
.footer-url { color: var(--green-light) !important; font-weight: 500; }

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: white;
    margin-bottom: 18px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li, .footer-col p { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-col a { color: rgba(255,255,255,0.6); transition: var(--transition-s); }
.footer-col a:hover { color: var(--green-light); padding-left: 4px; }
.footer-cta { margin-top: 20px; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 22px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* ============================================================
   WHATSAPP FAB
============================================================ */
.whatsapp-fab {
    position: fixed;
    bottom: 28px; right: 28px;
    width: 58px; height: 58px;
    border-radius: 50%;
    background: #25D366;
    color: white;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    z-index: 900;
    transition: var(--transition);
}
.whatsapp-fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37,211,102,0.55);
}
.whatsapp-fab svg { width: 30px; height: 30px; }

/* ============================================================
   RESPONSIVE — TABLET
============================================================ */
@media (max-width: 1024px) {
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-cards { order: -1; }
    .about-feature-grid { grid-template-columns: repeat(4, 1fr); }

    .products-grid { grid-template-columns: 1fr 1fr; }
    .product-card:last-child { grid-column: span 2; }

    .industries-grid { grid-template-columns: repeat(3, 1fr); }
    .industry-card { height: 180px; }

    .sustain-grid { grid-template-columns: 1fr; gap: 60px; }
    .sustain-visual { height: 280px; }

    .why-grid { grid-template-columns: repeat(3, 1fr); }

    .contact-grid { grid-template-columns: 1fr; }
    .contact-form-wrap { max-width: 600px; }

    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

/* ============================================================
   RESPONSIVE — MOBILE
============================================================ */
@media (max-width: 768px) {
    :root { --nav-h: 68px; }

    .section { padding: 70px 0; }

    /* Nav */
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .mobile-menu { display: block; }

    /* Hero */
    .hero-stats { padding: 18px 20px; }
    .hero-stat { padding: 0 16px; }
    .stat-num { font-size: 24px; }
    .hero-title { font-size: clamp(28px, 8vw, 44px); }
    .hero-subtitle { font-size: 15px; }
    .hero-buttons { flex-direction: column; align-items: center; }

    /* About */
    .about-feature-grid { grid-template-columns: 1fr 1fr; }

    /* Products */
    .products-grid { grid-template-columns: 1fr; }
    .product-card:last-child { grid-column: span 1; }

    /* Industries */
    .industries-grid { grid-template-columns: 1fr 1fr; }

    /* Why */
    .why-grid { grid-template-columns: 1fr 1fr; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }

    /* Sustain floats — hide on small */
    .sustain-float { display: none; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .about-feature-grid { grid-template-columns: 1fr 1fr; }
    .industries-grid { grid-template-columns: 1fr 1fr; }
    .why-grid { grid-template-columns: 1fr; }
    .hero-stats { flex-direction: column; gap: 20px; }
    .stat-sep { width: 60px; height: 1px; }
    .contact-form-wrap { padding: 28px 20px; }
    .section-header { margin-bottom: 40px; }
}