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

:root {
    --brand: #22bcad;
    --brand-dark: #1a998c;
    --bg-large: #F4F4F4;
    --bg-small: #FEFEFE;
    --muted: #D9F0EE;
    --text: #233238;
    --shadow: 0 6px 20px rgba(35,50,56,0.08);
    --radius: 12px;
    --font: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

html {
    scroll-behavior: smooth;
}

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

/* ===== NAVBAR COM HAMBÚRGUER MOBILE ===== */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 40px;
    background-color: var(--bg-small);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--brand);
    text-decoration: none;
    z-index: 1002;
    margin-right: auto;
}

.navbar-brand svg {
    width: 32px;
    height: 32px;
    stroke: var(--brand);
    flex-shrink: 0;
}

/* Links da navbar - desktop */
.navbar-links {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
    margin: 0;
    padding: 0;
}

.navbar-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 16px;
}

.navbar-links a:hover {
    color: var(--brand);
}

/* Botão de login */
.btn-login {
    padding: 10px 24px;
    background-color: var(--brand);
    color: white !important;
    border-radius: var(--radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 16px;
    display: inline-block;
}

.btn-login:hover {
    background-color: #1a998c;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(34,188,173,0.3);
}

/* ===== BOTÃO HAMBÚRGUER MOBILE ===== */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1002;
    position: relative;
    width: 44px;
    height: 44px;
}

.hamburger-icon {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    position: relative;
    transition: background 0.3s ease;
    margin: 0 auto;
}

.hamburger-icon::before,
.hamburger-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: transform 0.3s ease;
    left: 0;
}

.hamburger-icon::before {
    top: -6px;
}

.hamburger-icon::after {
    bottom: -6px;
}

/* Animação do hambúrguer para X */
.mobile-nav-toggle.active .hamburger-icon {
    background: transparent;
}

.mobile-nav-toggle.active .hamburger-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-nav-toggle.active .hamburger-icon::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Overlay para mobile */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(2px);
}

.nav-overlay.active {
    display: block;
    opacity: 1;
}

/* ===== HERO ===== */
.hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 120px 40px;
    min-height: 80vh;
    text-align: center;
    background: linear-gradient(135deg, #F4F4F4 0%, #FEFEFE 100%);
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
}

.hero h1 span {
    color: var(--brand);
}

.hero p {
    font-size: 18px;
    color: #666;
    max-width: 600px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    padding: 14px 32px;
    background-color: var(--brand);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    background-color: #1a998c;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(34,188,173,0.3);
}

.btn-secondary {
    padding: 14px 32px;
    background-color: transparent;
    color: var(--brand);
    border: 2px solid var(--brand);
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background-color: var(--muted);
}

/* ===== FEATURES ===== */
.features {
    padding: 80px 40px;
    background-color: var(--bg-small);
}

.features h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 60px;
    color: var(--text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: var(--bg-large);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(34,188,173,0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--brand);
}

.feature-card p {
    color: #666;
    font-size: 14px;
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-small);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    width: 90%;
    max-width: 400px;
    animation: slideUp 0.3s ease;
    position: relative;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    transition: color 0.3s;
    border: none;
    background: none;
}

.modal-close:hover {
    color: var(--text);
}

.modal h2 {
    margin-bottom: 30px;
    color: var(--text);
    font-size: 24px;
}

.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
}

.form-group input {
    padding: 12px 16px;
    border: 2px solid var(--muted);
    border-radius: 8px;
    font-size: 16px;
    font-family: var(--font);
    transition: all 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(34,188,173,0.1);
}

.error-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.error-message.show {
    display: block;
}

.modal button[type="submit"] {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background-color: var(--brand);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.modal button[type="submit"]:hover {
    background-color: #1a998c;
}

.modal button[type="submit"]:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--text);
    color: white;
    padding: 40px;
    text-align: center;
}

.footer p {
    margin: 8px 0;
    font-size: 14px;
}

/* ===== MOBILE MENU ===== */
@media screen and (max-width: 768px) {
    .navbar {
        padding: 12px 20px;
    }

    .mobile-nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 10px;
    }

    .navbar-brand {
        font-size: 20px;
    }

    .navbar-brand svg {
        width: 28px;
        height: 28px;
    }

    .navbar-links {
        position: fixed;
        top: 0;
        right: -280px;
        width: 260px;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: 80px 20px 30px;
        transition: right 0.3s ease;
        z-index: 1001;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        gap: 15px;
        margin: 0;
    }

    .navbar-links.active {
        right: 0;
    }

    .navbar-links li {
        width: 100%;
        margin: 0;
        padding: 0;
    }

    .navbar-links li a {
        display: block;
        padding: 15px 20px;
        width: 100%;
        text-align: left;
        font-size: 18px;
        border-radius: 8px;
        transition: background 0.3s;
        color: var(--text);
    }

    .navbar-links li a:hover {
        background: #f5f5f5;
        color: var(--brand);
    }

    .navbar-links li .btn-login {
        width: 100%;
        margin-top: 10px;
        font-size: 18px;
        padding: 15px;
        text-align: center;
    }

    /* Ajuste para o hero não ficar escondido atrás da navbar */
    .hero {
        padding: 100px 20px 60px;
        min-height: auto;
    }

    .hero h1 {
        font-size: 32px;
    }

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

    .features {
        padding: 60px 20px;
    }

    .features h2 {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .feature-card {
        padding: 30px;
    }

    .modal-content {
        width: 95%;
        padding: 30px 20px;
    }
}

/* Ajustes para tablets */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .navbar {
        padding: 16px 30px;
    }
    
    .navbar-links {
        gap: 20px;
    }

    .hero h1 {
        font-size: 40px;
    }
}

/* Garantias de comportamento */
body.menu-open {
    overflow: hidden;
}