/* === CSS Variables - Tema Tosca === */
:root {
    --primary-color: #0E7490;      /* Tosca Utama / Cyan-700 */
    --primary-light: #22D3EE;      /* Cyan-400 */
    --primary-dark: #164E63;       /* Cyan-900 */
    --secondary-color: #F8FAFC;    /* Slate-50 / Putih Bersih */
    --text-main: #0F172A;          /* Slate-900 */
    --text-muted: #64748B;         /* Slate-500 */
    --bg-light: #FFFFFF;
    --bg-alt: #F1F5F9;             /* Slate-100 */
    --border-color: #E2E8F0;       /* Slate-200 */
    --success: #10B981;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-tosca: 0 4px 14px 0 rgba(14, 116, 144, 0.39);
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--secondary-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* === Typography === */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

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

/* === Buttons === */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    text-align: center;
}

.btn-full {
    display: block;
    width: 100%;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--bg-alt);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.brand-logo {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

.nav-links a:not(.btn):hover {
    color: var(--primary-color);
}

/* === Hero Section === */
.hero {
    padding-top: 150px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: white;
    position: relative;
    padding-bottom: 220px;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    position: relative;
    z-index: 2;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

/* Chat Mockup */
.mockup-chat {
    width: 100%;
    max-width: 350px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.mockup-header {
    background: var(--primary-color);
    color: white;
    padding: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.mockup-body {
    padding: 20px 15px;
    background: var(--bg-alt);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 80%;
    padding: 10px 15px;
    border-radius: 15px;
    font-size: 0.9rem;
    color: var(--text-main);
}

.message.received {
    background: white;
    align-self: flex-start;
    border-bottom-left-radius: 2px;
    box-shadow: var(--shadow-sm);
}

.message.sent {
    background: var(--primary-light);
    color: var(--primary-dark);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.mockup-footer {
    padding: 15px;
    background: white;
    display: flex;
    gap: 10px;
    border-top: 1px solid var(--border-color);
}

.mockup-footer input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: var(--bg-alt);
}

.mockup-footer button {
    background: var(--primary-color);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.hero-shape {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    z-index: 1;
}

.hero-shape svg {
    display: block;
    width: 100%;
    height: auto;
}

/* === Section Defaults === */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* === Features Section === */
.features {
    padding: 80px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px;
    background: var(--bg-alt);
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.feature-card:hover {
    background: white;
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.feature-card h3 {
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* === Pricing Section === */
.pricing {
    padding: 80px 0;
    background: var(--secondary-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    position: relative;
    display: flex;
    flex-direction: column;
}

.pricing-card h3 {
    color: var(--primary-dark);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.pricing-card .price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.pricing-card .price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

.pricing-features {
    flex: 1;
    margin-bottom: 30px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    color: var(--text-main);
}

.pricing-features li i {
    color: var(--success);
    font-size: 1.2rem;
    margin-top: 2px;
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.pricing-card .badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* === Footer === */
footer {
    background: var(--primary-dark);
    color: white;
    padding-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info {
    max-width: 300px;
}

.footer-info .logo {
    color: white;
    margin-bottom: 15px;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact p a {
    transition: var(--transition);
}

.footer-contact p a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* === Responsive === */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Can add hamburger menu later */
    }
    
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-text h1 {
        font-size: 2.2rem;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
}