@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&display=swap');

:root {
    --azul: #1976d2;
    --verde: #43a047;
    --amarelo: #ffeb3b;
    --branco: #fff;
    --cinza: #f5f5f5;
    --sombra: 0 4px 24px rgba(25, 118, 210, 0.08);
}

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

body {
    font-family: 'Montserrat', Arial, sans-serif;
    background: linear-gradient(135deg, #e3f2fd 0%, #fffde7 100%);
    color: #222;
    min-height: 100vh;
}

header {
    background: linear-gradient(90deg, var(--azul) 60%, var(--verde) 100%);
    color: var(--branco);
    padding: 24px 0 16px 0;
    box-shadow: var(--sombra);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5vw;
    padding-right: 5vw;
}

.logo {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 2px;
}

nav a {
    color: var(--branco);
    text-decoration: none;
    margin-left: 32px;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--amarelo);
}

.hero {
    text-align: center;
    padding: 80px 20px 60px 20px;
    background: linear-gradient(120deg, #1976d2 0%, #43a047 100%);
    color: var(--branco);
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 18px;
    font-weight: 700;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 32px;
}

.cta-btn {
    background: linear-gradient(90deg, var(--amarelo), var(--verde));
    color: #222;
    padding: 16px 40px;
    border: none;
    border-radius: 32px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: var(--sombra);
    transition: background 0.2s, color 0.2s;
}

.cta-btn:hover {
    background: linear-gradient(90deg, var(--verde), var(--amarelo));
    color: var(--azul);
}

.planos {
    background: var(--cinza);
    padding: 60px 0;
    text-align: center;
}

.planos h2 {
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--azul);
    font-weight: 700;
}

.planos-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 32px;
}

.plano-card {
    background: linear-gradient(135deg, #fff 60%, #e3f2fd 100%);
    border-radius: 18px;
    box-shadow: var(--sombra);
    padding: 32px 28px;
    min-width: 260px;
    max-width: 320px;
    flex: 1 1 260px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.plano-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 8px 32px rgba(25, 118, 210, 0.16);
}

.plano-card h3 {
    color: var(--verde);
    font-size: 1.3rem;
    margin-bottom: 18px;
    font-weight: 700;
}

.plano-card ul {
    list-style: none;
}

.plano-card li {
    font-size: 1.1rem;
    margin: 14px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.plano-card strong {
    color: var(--azul);
    font-weight: 700;
}

.plano-card span {
    color: var(--verde);
    font-weight: 700;
    font-size: 1.1em;
}

.contato {
    background: linear-gradient(90deg, #fffde7 60%, #e3f2fd 100%);
    text-align: center;
    padding: 60px 20px;
}

.contato h2 {
    color: var(--azul);
    font-size: 2rem;
    margin-bottom: 18px;
}

.whatsapp-btn {
    display: inline-block;
    background: linear-gradient(90deg, #43a047 60%, #1976d2 100%);
    color: var(--branco);
    padding: 14px 32px;
    border-radius: 32px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    margin: 18px 0;
    box-shadow: var(--sombra);
    transition: background 0.2s, color 0.2s;
}

.whatsapp-btn:hover {
    background: linear-gradient(90deg, #1976d2 60%, #43a047 100%);
    color: var(--amarelo);
}

footer {
    background: var(--azul);
    color: var(--branco);
    text-align: center;
    padding: 18px 0;
    font-size: 1rem;
    margin-top: 0;
}

#dark-mode-toggle {
    background: none;
    border: none;
    color: var(--azul);
    font-size: 1.7rem;
    cursor: pointer;
    margin-left: 24px;
    transition: color 0.2s;
}

#dark-mode-toggle:hover {
    color: var(--verde);
}

/* Slide-out animation */
.slide-out {
    transform: translateX(-100vw);
    opacity: 0;
    transition: transform 0.7s cubic-bezier(.77,0,.18,1), opacity 0.7s;
}

.slide-out.active {
    transform: translateX(0);
    opacity: 1;
}

/* Modo escuro */
body.dark-mode {
    background: linear-gradient(135deg, #23272f 0%, #1a1d23 100%);
    color: #f1f1f1;
}

body.dark-mode header {
    background: linear-gradient(90deg, #111c2e 60%, #1b3c1b 100%);
    color: #fff;
}

body.dark-mode .logo {
    color: #fff;
}

body.dark-mode nav a {
    color: #fff;
}

body.dark-mode nav a:hover {
    color: #ffeb3b;
}

body.dark-mode .hero {
    background: linear-gradient(120deg, #111c2e 0%, #1b3c1b 100%);
    color: #fff;
}

body.dark-mode .cta-btn {
    background: linear-gradient(90deg, #ffeb3b, #43a047);
    color: #23272f;
}

body.dark-mode .cta-btn:hover {
    background: linear-gradient(90deg, #43a047, #ffeb3b);
    color: #111c2e;
}

body.dark-mode .planos {
    background: #23272f;
}

body.dark-mode .planos h2 {
    color: #ffeb3b;
}

body.dark-mode .plano-card {
    background: linear-gradient(135deg, #23272f 60%, #1a1d23 100%);
    color: #fff;
    box-shadow: 0 4px 24px rgba(25, 118, 210, 0.18);
}

body.dark-mode .plano-card h3 {
    color: #ffeb3b;
}

body.dark-mode .plano-card strong {
    color: #90caf9;
}

body.dark-mode .plano-card span {
    color: #a5d6a7;
}

body.dark-mode .contato {
    background: linear-gradient(90deg, #1a1d23 60%, #23272f 100%);
    color: #fff;
}

body.dark-mode .contato h2 {
    color: #ffeb3b;
}

body.dark-mode .whatsapp-btn {
    background: linear-gradient(90deg, #388e3c 60%, #1565c0 100%);
    color: #fff;
}

body.dark-mode .whatsapp-btn:hover {
    background: linear-gradient(90deg, #1565c0 60%, #388e3c 100%);
    color: #ffeb3b;
}

body.dark-mode footer {
    background: #111c2e;
    color: #fff;
}

#back-to-top {
    position: fixed;
    right: 24px;
    bottom: 32px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, #1976d2 60%, #43a047 100%);
    color: #fff;
    font-size: 2rem;
    box-shadow: 0 4px 16px rgba(25, 118, 210, 0.18);
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}

#back-to-top.show {
    opacity: 1;
    pointer-events: auto;
}

body.dark-mode #back-to-top {
    background: linear-gradient(135deg, #111c2e 60%, #1b3c1b 100%);
    color: #ffeb3b;
}

@media (max-width: 900px) {
    .planos-container {
        flex-direction: column;
        align-items: center;
    }
    header {
        flex-direction: column;
        gap: 12px;
        padding-left: 0;
        padding-right: 0;
    }
}