:root {
    --primary: #10B981;
    /* Emerald 500 */
    --primary-dark: #059669;
    /* Emerald 600 */
    --secondary: #3B82F6;
    /* Blue 500 */
    --accent: #F59E0B;
    /* Amber 500 */
    --dark: #111827;
    /* Gray 900 */
    --light: #F9FAFB;
    /* Gray 50 */
    --gray: #6B7280;
    /* Gray 500 */
    --text-color: #1F2937;
    /* Gray 800 */
    --bg-color: #FFFFFF;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);

    --radius-md: 0.5rem;
    --radius-lg: 1rem;
}

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

html {
    scroll-behavior: smooth;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--light);
}

.bg-dark {
    background-color: var(--dark);
    color: white;
}

.bg-dark h2,
.bg-dark h3,
.bg-dark h4 {
    color: white;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
}

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

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

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--dark);
}

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

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

.nav-links a {
    font-weight: 500;
    color: var(--text-color);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 8rem 0 6rem;
    overflow: hidden;
    text-align: center;
    background: linear-gradient(135deg, #f0fdf4 0%, #fff 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 2rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: 2px solid var(--primary);
}

.btn-secondary {
    background-color: white;
    color: var(--primary);
    border: 2px solid var(--primary);
    /* subtle border */
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: box-shadow 0.3s;
    border: 1px solid #e5e7eb;
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: #ecfdf5;
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.icon-box i {
    width: 28px;
    height: 28px;
}

/* Tabs for Install */
.tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-btn {
    background: white;
    border: 1px solid #e5e7eb;
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.tab-content {
    display: none;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.step-number {
    background: var(--primary);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

/* Login Guide */
.login-guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.credential-card,
.steps-card {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid #f3f4f6;
}

.credential-card h3,
.steps-card h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
    margin-bottom: 2rem;
}

.credential-item {
    margin-bottom: 1.5rem;
}

.credential-item label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.code-block {
    background: #f1f5f9;
    padding: 1rem;
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: 1.1rem;
    color: var(--dark);
    border: 1px solid #e2e8f0;
}

.example-box {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 2rem;
    font-size: 0.9rem;
}

.highlight-code {
    background: #fcd34d;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-weight: 700;
}

.steps-card ol {
    margin-left: 1.5rem;
    line-height: 2;
}

/* Detailed Features */
.features-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-detailed-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.icon-circle {
    background: var(--primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Process Steps (Payment) */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    text-align: center;
}

.process-step {
    position: relative;
}

.step-icon {
    width: 60px;
    height: 60px;
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-md);
}

/* Contact Grid */
.security-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.security-box,
.contact-box {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-btn {
    display: inline-block;
    background: var(--dark);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
}

/* Footer */
footer {
    background: var(--dark);
    color: var(--gray);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animations */
.link-highlight {
    color: var(--primary);
    font-weight: 600;
    text-decoration: underline;
}

.note-text {
    font-size: 0.85rem;
    color: var(--accent);
    margin-top: 0.5rem;
    background: #fffbeb;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    border: 1px solid #fcd34d;
    display: inline-block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

/* Responsive */
/* Responsive */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .container {
        padding: 0 2rem;
    }
}

@media (max-width: 768px) {
    :root {
        --radius-lg: 0.75rem;
    }

    .section {
        padding: 3.5rem 0;
    }

    /* Navbar Mobile */
    .navbar {
        padding: 0.75rem 0;
    }

    .hamburger {
        display: block;
        z-index: 1001;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 75%;
        max-width: 300px;
        background: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transform: translateX(100%);
        transition: transform 0.3s ease-in-out;
        box-shadow: -4px 0 10px rgba(0, 0, 0, 0.1);
        padding: 2rem;
        z-index: 1000;
    }

    .nav-links.active {
        transform: translateX(0);
        display: flex;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        font-size: 1.1rem;
        padding: 0.75rem;
        border-radius: var(--radius-md);
    }

    .nav-links a:active {
        background-color: #f3f4f6;
    }

    /* Hero Mobile */
    .hero {
        padding: 6rem 0 4rem;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
        margin-bottom: 1rem;
    }

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

    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    /* Features & Grid Adjustments */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    /* Tabs Mobile */
    .tabs {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }

    .tab-btn {
        justify-content: center;
    }

    /* Steps & Process */
    .step-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1.5rem;
        gap: 1rem;
    }

    .step-number {
        margin: 0 auto;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    /* Login Guide */
    .login-guide-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .credential-card,
    .steps-card {
        padding: 1.5rem;
    }

    .code-block {
        font-size: 1rem;
        padding: 0.75rem;
    }

    /* Footer */
    footer {
        padding: 1.5rem 0;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .logo-text {
        font-size: 1rem;
    }

    .logo-img {
        height: 32px;
    }
}