/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #00C49A;
    --accent-color: #FFD700;
    --neutral-bg: #F9F9F9;
    --card-bg: #FFFFFF;
    --text-primary: #222222;
    --text-secondary: #0B3D2E;
    --text-muted: #666666;
    --border-color: #E5E5E5;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00C49A 0%, #FFD700 100%);
    --gradient-accent: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    
    /* Shadows */
    --shadow-glow: 0 0 20px rgba(0, 196, 154, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing */
    --container-padding: 0 1rem;
    --section-padding: 4rem 0;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--neutral-bg);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-secondary);
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-accent {
    background: var(--gradient-accent);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-card);
}

.nav {
    padding: 1rem 0;
}

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

/* Logo */
.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.nav__logo:hover {
    transform: scale(1.05);
}

.nav__logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
}

.nav__logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.nav__logo-text h1 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--text-secondary);
}

.nav__logo-text p {
    font-size: 0.75rem;
    margin: 0;
    color: var(--text-muted);
}

/* Navigation Menu */
.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav__link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    position: relative;
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary-color);
}

.nav__link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

/* CTA Button */
.nav__cta {
    display: flex;
    align-items: center;
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Footer Brand */
.footer__brand {
    max-width: 300px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    margin-bottom: 1rem;
}

.footer__logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 8px;
}

.footer__logo-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.footer__logo-text h3 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--text-secondary);
}

.footer__logo-text p {
    font-size: 0.8rem;
    margin: 0;
    color: var(--text-muted);
}

.footer__description {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-muted);
}

/* Footer Sections */
.footer__title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.footer__list {
    list-style: none;
    padding: 0;
}

.footer__list li {
    margin-bottom: 0.5rem;
}

.footer__link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

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

/* Footer Contact */
.footer__contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.footer__contact-item i {
    color: var(--primary-color);
    width: 16px;
}

/* Footer Social */
.footer__social-links {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background: var(--neutral-bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-muted);
    transition: var(--transition);
}

.footer__social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.footer__social-handle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

/* Footer Newsletter */
.footer__newsletter {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.footer__newsletter-title {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.footer__newsletter-form {
    margin-bottom: 0;
}

.footer__newsletter-input-group {
    display: flex;
    gap: 0.5rem;
}

.footer__newsletter-input-group input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.85rem;
    background: var(--neutral-bg);
    color: var(--text-primary);
    transition: var(--transition);
}

.footer__newsletter-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
}

.footer__newsletter-btn {
    padding: 0.5rem 0.75rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer__newsletter-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

/* Footer Bottom */
.footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer__copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
}

.footer__legal {
    display: flex;
    gap: 1.5rem;
}

.footer__credit {
    text-align: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.footer__credit p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.footer__credit-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.footer__credit-link:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .nav__list {
        gap: 1.5rem;
    }
    
    .nav__link {
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid var(--border-color);
        padding: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav__list {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav__link {
        padding: 0.75rem 1rem;
        border-radius: 8px;
        display: block;
    }
    
    .nav__link:hover,
    .nav__link.active {
        background: var(--primary-color);
        color: white;
    }
    
    .nav__link.active::after {
        display: none;
    }
    
    .nav__toggle {
        display: block;
    }
    
    .nav__cta {
        display: none;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .nav {
        padding: 0.75rem 0;
    }
    
    .nav__logo-text h1 {
        font-size: 1.1rem;
    }
    
    .nav__logo-text p {
        display: none;
    }
    
    .footer {
        padding: 2rem 0 1rem;
    }
    
    .footer__social-links {
        justify-content: center;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ===== NOTIFICATIONS ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
    min-width: 300px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--primary-color);
    transform: translateX(100%);
    opacity: 0;
    transition: var(--transition);
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification-success {
    border-left-color: var(--primary-color);
}

.notification-error {
    border-left-color: #dc3545;
}

.notification-info {
    border-left-color: #6c757d;
}

.notification-content {
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notification-content i {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.notification-success .notification-content i {
    color: var(--primary-color);
}

.notification-error .notification-content i {
    color: #dc3545;
}

.notification-info .notification-content i {
    color: #6c757d;
}

.notification-content span {
    flex: 1;
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-primary);
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
    flex-shrink: 0;
}

.notification-close:hover {
    background: var(--neutral-bg);
    color: var(--text-primary);
}

/* ===== WHATSAPP BUTTON ===== */
.whatsapp-button {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 1000;
}

.whatsapp-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
}

.whatsapp-link:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
    color: white;
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-glow);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.scroll-to-top.show {
    transform: translateY(0);
    opacity: 1;
}

.scroll-to-top:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* ===== TOOLTIPS ===== */
.tooltip {
    position: absolute;
    background: var(--text-secondary);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    z-index: 10000;
    pointer-events: none;
    white-space: nowrap;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--text-secondary);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.3s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.3s ease-out;
}