/*
Theme Name: Global Energy & Commodity Partners Theme
Theme URI: https://webmakelar.com/
Author: Global Energy & Commodity Partners
Description: Official Partner of PT SHA Solo. Premium theme for Solar B40 distribution, CPO trading, and waste oil management services.
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: global-energy-theme
*/

/* ==========================================================================
   DESAIN SISTEM & UTILITY
   ========================================================================== */

:root {
    /* Color Palette */
    --color-primary: #0F172A;       /* Deep Navy Blue */
    --color-secondary: #1E293B;     /* Slate / Secondary Navy */
    --color-dark-bg: #090D16;       /* Ultra Dark Navy */
    --color-light-bg: #F8FAFC;      /* Clean Off-white */
    --color-white: #FFFFFF;
    
    --color-text-dark: #0F172A;
    --color-text-light: #F8FAFC;
    --color-text-muted: #64748B;
    --color-text-silver: #E2E8F0;
    
    --color-accent-green: #10B981;  /* Emerald Green for CTAs */
    --color-accent-green-hover: #059669;
    --color-accent-red: #EF4444;    /* Crimson Red for subtle accents */
    --color-accent-red-hover: #DC2626;
    --color-border: #334155;        /* Sleek Border */
    --color-border-light: #E2E8F0;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
}

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

ul {
    list-style: none;
}

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

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

/* Common Layout Components */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.text-white {
    color: var(--color-white) !important;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-accent-green);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    background-color: var(--color-accent-green-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-text-silver);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background-color: #25D366;
    color: var(--color-white);
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
}

.btn-whatsapp:hover {
    background-color: #20ba5a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   HEADER / NAVBAR (Sticky & Glassmorphic)
   ========================================================================== */

.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: padding var(--transition-normal), background-color var(--transition-normal);
    padding: 1.25rem 0;
}

.main-header.scrolled {
    padding: 0.75rem 0;
    background-color: rgba(15, 23, 42, 0.95);
    box-shadow: var(--shadow-md);
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    color: var(--color-accent-green);
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: 0.05em;
    line-height: 1.1;
}

.logo-subtitle {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* Nav Menu */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-silver);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-white);
}

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

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

/* Mobile Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1100;
}

.mobile-nav-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--color-white);
    transition: all var(--transition-normal);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
    position: relative;
    padding: 10rem 0 7rem;
    background-color: var(--color-primary);
    background-image: url('assets/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: var(--color-white);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(15, 23, 42, 0.4) 0%, rgba(9, 13, 22, 0.95) 75%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 3.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    line-height: 1.15;
    text-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-silver);
    margin-bottom: 2.5rem;
    max-width: 720px;
    font-weight: 400;
    line-height: 1.7;
}

/* Trust Badges */
.trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--color-text-silver);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.badge-icon {
    width: 16px;
    height: 16px;
    color: var(--color-accent-green);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ==========================================================================
   SECTION COMMON HEADER
   ========================================================================== */

.section-header {
    margin-bottom: 4rem;
}

.section-tagline {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-accent-green);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.75rem;
}

.section-tagline.color-light {
    color: rgba(255, 255, 255, 0.7);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.section-line {
    width: 60px;
    height: 4px;
    background-color: var(--color-accent-green);
    margin: 0 auto;
    border-radius: 2px;
}

.section-header.text-center .section-line {
    margin: 0 auto;
}

/* ==========================================================================
   KEY FEATURES SECTION
   ========================================================================== */

.features-section {
    padding: 7rem 0;
    background-color: var(--color-light-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    transition: all var(--transition-normal);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(16, 185, 129, 0.3);
}

.feature-icon-wrapper {
    width: 3.5rem;
    height: 3.5rem;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-accent-green);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon {
    width: 1.75rem;
    height: 1.75rem;
}

.feature-card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.feature-card-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   SERVICES & PRODUCTS SECTION
   ========================================================================== */

.services-section {
    padding: 7rem 0;
    background-color: var(--color-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(16, 185, 129, 0.2);
}

.service-image-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
    background-color: var(--color-primary);
}

.service-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-image {
    transform: scale(1.05);
}

.service-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.35rem 0.85rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.service-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-icon-heading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.service-card-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-accent-green);
    flex-shrink: 0;
}

.service-title-text {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.service-description-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-accent-green);
}

.service-link:hover {
    color: var(--color-accent-green-hover);
}

.link-arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.service-link:hover .link-arrow {
    transform: translateX(4px);
}

/* ==========================================================================
   LEGALITY & PARTNERSHIP SECTION
   ========================================================================== */

.legality-section {
    padding: 7rem 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    position: relative;
    background-image: radial-gradient(circle at 10% 20%, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 1) 90%);
}

.legality-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

.legality-content .section-title {
    color: var(--color-white);
}

.legality-text {
    font-size: 1.1rem;
    color: var(--color-text-silver);
    margin-bottom: 3.5rem;
    line-height: 1.75;
}

/* Badges Grid */
.partner-logos {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.partner-logo-item {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 1.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 110px;
    transition: all var(--transition-normal);
}

.partner-logo-item:hover {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: rgba(16, 185, 129, 0.3);
    transform: translateY(-3px);
}

.partner-badge-visual {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.partner-sha .badge-title {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-accent-green);
    margin-bottom: 0.25rem;
}

.partner-sha .badge-org {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--color-white);
}

.partner-sha .badge-code {
    font-size: 0.55rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

.iso-badge-visual {
    display: flex;
    flex-direction: column;
}

.iso-title {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.iso-num {
    font-size: 1rem;
    font-weight: 800;
    color: var(--color-white);
    margin: 0.15rem 0;
}

.iso-desc {
    font-size: 0.6rem;
    color: var(--color-text-silver);
}

/* ==========================================================================
   TRANSACTION WORKFLOW SECTION
   ========================================================================== */

.workflow-section {
    padding: 7rem 0;
    background-color: var(--color-light-bg);
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

.workflow-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 10%;
    width: 80%;
    height: 2px;
    background-color: var(--color-border-light);
    z-index: 1;
}

.step-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    padding: 2rem 1.5rem;
    text-align: center;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(16, 185, 129, 0.2);
}

.step-number-bubble {
    width: 30px;
    height: 30px;
    background-color: var(--color-accent-green);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 800;
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.25);
}

.step-icon-wrapper {
    width: 3.5rem;
    height: 3.5rem;
    background-color: var(--color-light-bg);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-normal);
}

.step-card:hover .step-icon-wrapper {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.step-icon {
    width: 1.5rem;
    height: 1.5rem;
}

.step-title {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.step-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ==========================================================================
   CONTACT & FORM SECTION
   ========================================================================== */

.contact-section {
    padding: 7rem 0;
    background-color: var(--color-dark-bg);
    color: var(--color-white);
    background-image: radial-gradient(circle at 90% 90%, rgba(30, 41, 59, 0.6) 0%, rgba(9, 13, 22, 1) 80%);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 4rem;
    align-items: center;
}

.contact-desc {
    color: var(--color-text-silver);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.detail-icon-wrapper {
    width: 3.25rem;
    height: 3.25rem;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--color-accent-green);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-icon {
    width: 1.5rem;
    height: 1.5rem;
}

.detail-text {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-white);
}

/* Form Styles */
.contact-form-wrapper {
    background-color: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.form-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--color-accent-green);
    padding-left: 0.75rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-silver);
    margin-bottom: 0.5rem;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    background-color: var(--color-primary);
    border: 1px solid var(--color-border);
    color: var(--color-white);
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color var(--transition-fast);
}

.form-select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
    padding-right: 2.5rem;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--color-accent-green);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.15);
}

.form-textarea {
    resize: none;
}

.btn-submit {
    width: 100%;
    background-color: var(--color-accent-green);
    color: var(--color-white);
    padding: 1rem;
    font-size: 1rem;
    margin-top: 1rem;
}

.btn-submit:hover {
    background-color: var(--color-accent-green-hover);
}

.form-status {
    margin-top: 1rem;
    font-size: 0.9rem;
    text-align: center;
    padding: 0.75rem;
    border-radius: 8px;
    display: none;
}

.form-status.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-status.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.main-footer {
    background-color: var(--color-dark-bg);
    border-top: 1px solid var(--color-border);
    padding: 5rem 0 0;
    color: var(--color-text-silver);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 4rem;
    padding-bottom: 4rem;
}

.logo-footer .logo-title {
    font-size: 1.25rem;
}

.footer-about {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer-title {
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

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

.footer-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-list a {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.footer-list a:hover {
    color: var(--color-white);
    padding-left: 4px;
}

.footer-disclaimer {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.export-badge {
    display: inline-block;
    border: 1px dashed var(--color-accent-green);
    color: var(--color-accent-green);
    padding: 0.35rem 1rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.footer-bottom {
    background-color: var(--color-primary);
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ==========================================================================
   BACK TO TOP & FLOATING ELEMENTS
   ========================================================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 45px;
    height: 45px;
    background-color: var(--color-accent-green);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

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

.back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE DESIGN)
   ========================================================================== */

@media (max-width: 1024px) {
    .features-grid, .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .workflow-steps::before {
        display: none;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .footer-legal-info {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .main-header {
        padding: 1rem 0;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-primary);
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
        transition: right var(--transition-normal);
        padding: 6rem 2rem 2rem;
        align-items: flex-start;
        flex-direction: column;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1.5rem;
        width: 100%;
    }
    
    .nav-link {
        font-size: 1.1rem;
        display: block;
        width: 100%;
    }
    
    .header-cta {
        display: none; /* Hide WhatsApp button in header on mobile to fit drawer toggle */
    }
    
    /* Toggle Bar Animations */
    .mobile-nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .partner-logos {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .features-grid, .services-grid, .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .partner-logos {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .footer-legal-info {
        grid-column: span 1;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .contact-form-wrapper {
        padding: 2rem 1.5rem;
    }
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS & MICRO-INTERACTIONS
   ========================================================================== */

.reveal-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}

.reveal-fade {
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity;
}

.reveal-up.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-fade.reveal-visible {
    opacity: 1;
}

/* Premium micro-animations & Hover transitions */
.btn {
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, rgba(255, 255, 255, 0) 70%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    transform: scale(0.5);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.btn-primary:hover::after {
    opacity: 1;
    transform: scale(1);
}

.feature-card, .service-card, .step-card, .partner-logo-item {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.feature-card:hover, .service-card:hover, .step-card:hover, .partner-logo-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15);
}

.service-image-wrapper {
    overflow: hidden;
}

.service-image {
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover .service-image {
    transform: scale(1.08);
}