/* ===========================================
   DIOS ENERGY FZE - Modern Website Styles
   Clean, Simple, Professional Design
   =========================================== */

/* CSS Variables */
:root {
    --primary: #1a237e;
    --primary-dark: #0d1754;
    --primary-light: #303f9f;
    --primary-gradient: linear-gradient(135deg, #1a237e 0%, #303f9f 50%, #5c6bc0 100%);
    --secondary: #ff6b35;
    --secondary-light: #ff8a5b;
    --accent: #00bcd4;
    --success: #25D366;
    --dark: #1a1a2e;
    --gray-900: #212529;
    --gray-700: #495057;
    --gray-500: #6c757d;
    --gray-300: #dee2e6;
    --gray-200: #e9ecef;
    --gray-100: #f8f9fa;
    --white: #ffffff;
    --shadow: 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(26, 35, 126, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* Focus visible styles for accessibility */
:focus-visible {
    outline: 3px solid var(--primary-light);
    outline-offset: 2px;
}

/* Remove outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* Selection styles */
::selection {
    background: var(--primary);
    color: var(--white);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.125rem; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(26, 35, 126, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 35, 126, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
    transform: translateY(-3px);
}

.btn-block {
    width: 100%;
}

/* ===========================================
   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);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-logo img {
    height: 50px;
    width: auto;
    transition: var(--transition);
}

.nav-logo:hover img {
    transform: scale(1.02);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-toggle:hover {
    background: var(--gray-100);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

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

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/slider-7.jpg') center/cover no-repeat;
    opacity: 0.2;
    animation: heroZoom 20s ease-in-out infinite alternate;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(92, 107, 192, 0.15) 0%, transparent 50%);
}

@keyframes heroZoom {
    from { transform: scale(1); }
    to { transform: scale(1.1); }
}

.hero-content {
    text-align: center;
    max-width: 850px;
    margin: 0 auto;
    padding: 60px 20px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-tag {
    display: inline-block;
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    border-radius: 30px;
    margin-bottom: 28px;
    letter-spacing: 2px;
    text-transform: uppercase;
    backdrop-filter: blur(4px);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-title {
    color: var(--white);
    margin-bottom: 28px;
    text-shadow: 0 2px 40px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-text {
    color: rgba(255, 255, 255, 0.9);
    font-size: 19px;
    max-width: 620px;
    margin: 0 auto 44px;
    line-height: 1.7;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-buttons {
    display: flex;
    gap: 18px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.8s both;
}

/* ===========================================
   SECTIONS
   =========================================== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--gray-100);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    margin-bottom: 16px;
}

.section-text {
    color: var(--gray-500);
    font-size: 17px;
}

/* ===========================================
   SERVICES
   =========================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    padding: 44px 32px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 28px;
    position: relative;
    transition: var(--transition);
}

.service-icon::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px dashed rgba(26, 35, 126, 0.2);
    opacity: 0;
    transition: var(--transition);
}

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

.service-card:hover .service-icon::after {
    opacity: 1;
    animation: spinSlow 10s linear infinite;
}

@keyframes spinSlow {
    to { transform: rotate(360deg); }
}

.service-icon svg {
    width: 36px;
    height: 36px;
    color: var(--white);
}

.service-title {
    margin-bottom: 14px;
    font-weight: 700;
}

.service-text {
    color: var(--gray-500);
    font-size: 15px;
    line-height: 1.7;
}

/* ===========================================
   ABOUT
   =========================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-tag,
.about-content .section-title {
    text-align: left;
}

.about-text {
    margin-bottom: 20px;
    color: var(--gray-700);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    display: block;
    font-size: 2.25rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
    font-weight: 500;
}

.about-image {
    position: relative;
}

.about-image::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    right: -20px;
    bottom: -20px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    opacity: 0.1;
    z-index: -1;
}

.about-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.about-image:hover img {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

/* ===========================================
   FEATURES
   =========================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-item {
    display: flex;
    gap: 20px;
    padding: 32px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
    overflow: hidden;
}

.feature-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.feature-item:hover::after {
    transform: scaleX(1);
}

.feature-icon {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.feature-item:hover .feature-icon {
    transform: rotate(-5deg) scale(1.1);
}

.feature-icon svg {
    width: 26px;
    height: 26px;
    color: var(--white);
}

.feature-title {
    margin-bottom: 10px;
    font-weight: 700;
}

.feature-text {
    color: var(--gray-500);
    font-size: 15px;
    line-height: 1.6;
}

/* ===========================================
   CONTACT
   =========================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info .section-tag,
.contact-info .section-title {
    text-align: left;
}

.contact-text {
    margin-bottom: 30px;
    color: var(--gray-700);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.contact-item .contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item .contact-icon svg {
    width: 22px;
    height: 22px;
    color: var(--white);
}

.contact-item strong {
    display: block;
    margin-bottom: 4px;
    color: var(--gray-900);
}

.contact-item p {
    color: var(--gray-500);
    font-size: 15px;
}

.contact-item a {
    color: var(--primary);
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--white);
    padding: 44px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 20px;
    font-size: 15px;
    font-family: inherit;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--gray-100);
    transition: var(--transition);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: var(--gray-500);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(26, 35, 126, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236c757d' 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 16px center;
    background-size: 18px;
    padding-right: 48px;
}

/* ===========================================
   FOOTER
   =========================================== */
.footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: 80px 0 30px;
}

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

.footer-logo {
    height: 50px;
    margin-bottom: 20px;
}

.footer-brand p {
    color: var(--gray-500);
    font-size: 15px;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--gray-500);
    font-size: 15px;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-contact p {
    font-size: 15px;
    margin-bottom: 10px;
}

.footer-contact a {
    color: var(--gray-300);
}

.footer-contact a:hover {
    color: var(--white);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-500);
}

/* ===========================================
   WHATSAPP BUTTON
   =========================================== */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    z-index: 999;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1); }
}

.whatsapp-btn svg {
    width: 32px;
    height: 32px;
    color: var(--white);
    transition: var(--transition);
}

.whatsapp-btn:hover {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
    animation: none;
}

.whatsapp-btn:hover svg {
    transform: scale(1.1);
}

/* ===========================================
   SCROLL TO TOP BUTTON
   =========================================== */
.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 50px;
    height: 50px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

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

.scroll-top-btn svg {
    width: 22px;
    height: 22px;
    color: var(--primary);
    transition: var(--transition);
}

.scroll-top-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.scroll-top-btn:hover svg {
    color: var(--white);
}

/* ===========================================
   RESPONSIVE DESIGN
   =========================================== */
@media (max-width: 992px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        order: -1;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .section {
        padding: 60px 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .stat-item {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 15px;
        padding: 15px 20px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-logo {
        margin: 0 auto 20px;
    }

    .contact-form-wrapper {
        padding: 30px 20px;
    }

    .whatsapp-btn {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }

    .whatsapp-btn svg {
        width: 24px;
        height: 24px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    .service-card {
        padding: 30px 20px;
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

    .feature-icon {
        margin: 0 auto;
    }
}

/* Print Styles */
@media print {
    .header,
    .whatsapp-btn,
    .hero-buttons {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    .section {
        padding: 40px 0;
    }
}