/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #2563eb;
    font-weight: 700;
    font-size: 1.8rem;
}

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

.nav-link {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #2563eb;
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #374151;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: slideInLeft 1s ease-out;
}

.brand-name {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #ffffff, #f0f9ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    display: block;
    font-size: 1.5rem;
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(45deg, #25d366, #128c7e);
    color: white;
    border: none;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(37, 211, 102, 0.4);
}

.btn-primary.large {
    padding: 18px 40px;
    font-size: 1.2rem;
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #2563eb;
}

.hero-features {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    opacity: 0.9;
}

.feature-item i {
    font-size: 1.2rem;
    color: #60a5fa;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: slideInRight 1s ease-out;
}

.hero-graphic {
    position: relative;
    width: 400px;
    height: 400px;
}

.graphic-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.circle-1 {
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, #60a5fa, #3b82f6);
    top: 50px;
    left: 50px;
    animation-delay: 0s;
}

.circle-2 {
    width: 100px;
    height: 100px;
    background: linear-gradient(45deg, #34d399, #10b981);
    top: 150px;
    right: 80px;
    animation-delay: 2s;
}

.circle-3 {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    bottom: 100px;
    left: 100px;
    animation-delay: 4s;
}

.delivery-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    color: #2563eb;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: 100px 0;
    background: #f9fafb;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 1.5rem;
}

.about-text strong {
    color: #2563eb;
    font-weight: 600;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6b7280;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Why D Store Section */
.why-dstore {
    padding: 100px 0;
    background: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f3f4f6;
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #2563eb, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.benefit-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.benefit-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

.step-item {
    grid-column: span 1;
    text-align: center;
    padding: 2rem 1rem;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.step-item:hover {
    transform: translateY(-5px);
}

.step-item:nth-child(1) { grid-column: 1 / 2; }
.step-item:nth-child(3) { grid-column: 3 / 4; }
.step-item:nth-child(5) { grid-column: 5 / 6; }
.step-item:nth-child(7) { grid-column: 7 / 8; }

.step-connector {
    grid-column: span 1;
    height: 3px;
    background: linear-gradient(90deg, #2563eb, #60a5fa);
    border-radius: 10px;
    position: relative;
}

.step-connector::after {
    content: '➜';
    position: absolute;
    right: -10px;
    top: -8px;
    color: #2563eb;
    font-size: 1.2rem;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #2563eb, #3b82f6);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.step-content p {
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Categories Section */
.categories {
    padding: 100px 0;
    background: white;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.category-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    background: white;
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.category-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

.category-card p {
    color: #6b7280;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #60a5fa;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #e5e7eb;
}

.footer-section p {
    color: #9ca3af;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #60a5fa;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.5rem;
}

.contact-info i {
    color: #60a5fa;
    width: 20px;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #60a5fa;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Responsive Design */

/* Tablet Styles */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .hero-container {
        gap: 3rem;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Landscape and Small Tablet */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .nav-container {
        padding: 0 20px;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        text-align: center;
        transition: 0.3s ease;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-link {
        padding: 1rem 0;
        font-size: 1.1rem;
    }

    .hamburger {
        display: flex;
    }

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

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Hero Section Mobile */
    .hero {
        min-height: 90vh;
        padding: 100px 0 50px;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .brand-name {
        font-size: 2.5rem;
        line-height: 1.1;
    }

    .tagline {
        font-size: 1.2rem;
        line-height: 1.3;
    }

    .hero-description {
        font-size: 1.1rem;
        line-height: 1.6;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin-bottom: 2rem;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 280px;
        padding: 15px 25px;
        justify-content: center;
    }

    .hero-features {
        justify-content: center;
        gap: 1.5rem;
        flex-wrap: wrap;
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
        gap: 5px;
        font-size: 0.9rem;
    }

    .hero-graphic {
        width: 280px;
        height: 280px;
    }

    /* Sections Mobile */
    .about, .why-dstore, .how-it-works, .categories, .cta-section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 3rem;
    }

    .section-header h2 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .section-header p {
        font-size: 1.1rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-between;
        gap: 1rem;
    }

    .stat-item {
        flex: 1;
        padding: 1.2rem;
    }

    .stat-number {
        font-size: 1.6rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .benefit-card {
        padding: 2rem 1.5rem;
    }

    .benefit-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }

    .steps-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        max-width: 400px;
    }

    .step-item {
        grid-column: span 1 !important;
        padding: 1.5rem;
    }

    .step-connector {
        height: 40px;
        width: 3px;
        margin: 0 auto;
        background: linear-gradient(180deg, #2563eb, #60a5fa);
    }

    .step-connector::after {
        content: '⬇';
        right: auto;
        left: 50%;
        transform: translateX(-50%);
        top: auto;
        bottom: -8px;
        font-size: 1rem;
    }

    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .category-card {
        padding: 2rem 1.5rem;
    }

    .category-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }

    .cta-content h2 {
        font-size: 2rem;
        line-height: 1.2;
    }

    .cta-content p {
        font-size: 1.1rem;
    }

    .footer {
        padding: 50px 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 0 15px;
        height: 65px;
    }

    .nav-logo h2 {
        font-size: 1.6rem;
    }

    .nav-menu {
        top: 65px;
        padding: 1.5rem 0;
    }

    .nav-link {
        font-size: 1rem;
        padding: 0.8rem 0;
    }

    /* Hero Mobile Portrait */
    .hero {
        min-height: 85vh;
        padding: 80px 0 40px;
    }

    .brand-name {
        font-size: 2rem;
        margin-bottom: 0.3rem;
    }

    .tagline {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }

    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.8rem;
        line-height: 1.5;
    }

    .hero-buttons {
        margin-bottom: 1.5rem;
    }

    .btn-primary, .btn-secondary {
        padding: 14px 20px;
        font-size: 0.95rem;
        max-width: 260px;
    }

    .btn-primary.large {
        padding: 16px 25px;
        font-size: 1rem;
    }

    .hero-features {
        gap: 1rem;
    }

    .feature-item {
        font-size: 0.85rem;
    }

    .feature-item i {
        font-size: 1rem;
    }

    .hero-graphic {
        width: 240px;
        height: 240px;
    }

    .circle-1 {
        width: 120px;
        height: 120px;
    }

    .circle-2 {
        width: 80px;
        height: 80px;
    }

    .circle-3 {
        width: 60px;
        height: 60px;
    }

    .delivery-icon {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }

    /* Sections Mobile Portrait */
    .about, .why-dstore, .how-it-works, .categories, .cta-section {
        padding: 50px 0;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    .about-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-item {
        padding: 1rem;
    }

    .stat-number {
        font-size: 1.4rem;
    }

    .benefit-card {
        padding: 1.8rem 1.2rem;
    }

    .benefit-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .benefit-card h3 {
        font-size: 1.1rem;
    }

    .step-item {
        padding: 1.2rem;
    }

    .step-number {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
        margin-bottom: 1rem;
    }

    .step-content h3 {
        font-size: 1rem;
    }

    .step-content p {
        font-size: 0.85rem;
    }

    .category-card {
        padding: 1.8rem 1.2rem;
    }

    .category-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .category-card h3 {
        font-size: 1.1rem;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .cta-content p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .footer {
        padding: 40px 0 15px;
    }

    .footer-content {
        gap: 1.5rem;
    }

    .footer-section h3 {
        font-size: 1.3rem;
    }

    .footer-section h4 {
        font-size: 1.1rem;
    }

    .social-links {
        justify-content: center;
    }
}

/* Extra Small Devices */
@media (max-width: 360px) {
    .container {
        padding: 0 12px;
    }

    .brand-name {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .btn-primary, .btn-secondary {
        padding: 12px 18px;
        font-size: 0.9rem;
        max-width: 240px;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .hero-graphic {
        width: 200px;
        height: 200px;
    }

    .delivery-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .benefit-card, .category-card {
        padding: 1.5rem 1rem;
    }

    .step-item {
        padding: 1rem;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn-primary, .btn-secondary, .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .social-link {
        min-width: 44px;
        min-height: 44px;
    }
    
    .hamburger {
        min-width: 44px;
        min-height: 44px;
        justify-content: center;
        align-items: center;
    }
}