/* WhatsIbell Landing Page - Stylesheet */

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

:root {
    --primary: #00C853;
    --secondary: #00D9FF;
    --dark: #1A1A1A;
    --light: #F5F5F5;
    --white: #FFFFFF;
    --gray: #666666;
    --border: #E0E0E0;
    --success: #4CAF50;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 20px;
}

.logo-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: 20px;
    color: var(--dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: #00A840;
    box-shadow: 0 4px 12px rgba(0, 200, 83, 0.3);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: rgba(0, 200, 83, 0.05);
}

.btn-large {
    padding: 14px 28px;
    font-size: 16px;
}

/* Hero Section */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, rgba(0, 200, 83, 0.05) 0%, rgba(0, 217, 255, 0.05) 100%);
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--dark);
}

.hero-subtitle {
    font-size: 28px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.stat {
    background: linear-gradient(135deg, rgba(0, 200, 83, 0.1), rgba(0, 217, 255, 0.1));
    padding: 24px;
    border-radius: 12px;
    border: 1px solid rgba(0, 200, 83, 0.2);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--gray);
    font-weight: 600;
}

/* Sections */
section {
    padding: 80px 0;
}

h2 {
    font-size: 40px;
    text-align: center;
    margin-bottom: 16px;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ROI Section */
.roi {
    background: var(--light);
}

.roi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.roi-card {
    background: var(--white);
    padding: 32px;
    border-radius: 12px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s ease;
}

.roi-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.roi-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.roi-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark);
}

.roi-card p {
    color: var(--gray);
    line-height: 1.6;
}

.roi-calculator {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    padding: 40px;
    border-radius: 12px;
    margin-top: 40px;
}

.roi-calculator h3 {
    font-size: 24px;
    margin-bottom: 32px;
    color: var(--white);
}

.roi-calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.calc-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

.calc-item.highlight {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.calc-item label {
    display: block;
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.calc-value {
    font-size: 24px;
    font-weight: 700;
}

.roi-note {
    font-size: 14px;
    opacity: 0.9;
}

/* Use Cases */
.use-cases {
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.case-card {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 28px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.case-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    transform: translateY(-4px);
}

.case-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.case-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark);
}

.case-card p {
    color: var(--gray);
    line-height: 1.6;
    margin-bottom: 12px;
}

.case-result {
    font-weight: 600;
    color: var(--primary);
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

/* Features */
.features {
    background: var(--light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-item {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: flex;
    gap: 16px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.feature-check {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.feature-item h4 {
    font-size: 16px;
    margin-bottom: 4px;
    color: var(--dark);
}

.feature-item p {
    color: var(--gray);
    font-size: 14px;
}

/* Comparison */
.comparison {
    background: var(--white);
}

.comparison-table {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.table-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-weight: 600;
    padding: 16px;
}

.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 1px solid var(--border);
    padding: 16px;
    align-items: center;
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:nth-child(even) {
    background: var(--light);
}

.table-col.highlight {
    color: var(--primary);
    font-weight: 600;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    text-align: center;
}

.cta h2 {
    color: var(--white);
    font-size: 36px;
    margin-bottom: 16px;
}

.cta > .container > p {
    font-size: 18px;
    margin-bottom: 32px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta .btn-primary {
    background: var(--white);
    color: var(--primary);
}

.cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

.cta .btn-secondary {
    border-color: var(--white);
    color: var(--white);
}

.cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Contact Form */
.contact {
    background: var(--light);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.1);
}

.contact-form button {
    width: 100%;
    margin-top: 20px;
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
}

.form-message.success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

/* Floating WhatsApp Button */
.floating-whatsapp {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 4px 12px rgba(0, 200, 83, 0.4);
    transition: all 0.3s ease;
    z-index: 999;
    text-decoration: none;
}

.floating-whatsapp:hover {
    background: #00A840;
    box-shadow: 0 6px 20px rgba(0, 200, 83, 0.5);
    transform: scale(1.1);
}

/* Footer */
.footer {
    background: #1A1A1A;
    color: #CCCCCC;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.footer-logo .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 16px;
}

.footer-logo .logo-text {
    font-size: 16px;
}

.footer-col p {
    font-size: 14px;
    color: #999999;
}

.footer-col h5 {
    font-weight: 600;
    color: var(--white);
    margin-bottom: 16px;
    font-size: 14px;
}

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

.footer-col ul li {
    margin-bottom: 8px;
}

.footer-col ul li a {
    color: #999999;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    color: #666666;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .hero-description {
        font-size: 16px;
    }

    h2 {
        font-size: 28px;
    }

    .section-subtitle {
        font-size: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .table-header,
    .table-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .table-header {
        display: none;
    }

    .table-row {
        display: block;
        padding: 16px;
    }

    .table-col {
        display: flex;
        justify-content: space-between;
        margin-bottom: 8px;
        font-size: 14px;
    }

    .table-col::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--dark);
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding-top: 100px;
        padding-bottom: 40px;
    }

    section {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    h2 {
        font-size: 24px;
    }

    .btn {
        padding: 10px 14px;
        font-size: 13px;
    }

    .btn-large {
        padding: 12px 20px;
        font-size: 14px;
    }

    .contact-form {
        padding: 24px;
    }

    .floating-whatsapp {
        width: 48px;
        height: 48px;
        font-size: 24px;
        bottom: 16px;
        right: 16px;
    }
}