/* ========================================
   VARIÁVEIS DE COR
======================================== */
:root {
    --verde-principal: #1E8E6A;
    --verde-hover: #2BBF90;
    --verde-escuro: #156B52;
    --azul-detalhe: #2D6CDF;
    --fundo: #F4F7F6;
    --branco: #FFFFFF;
    --texto: #222;
    --erro: #D32F2F;
}

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

/* ===== BASE ===== */
body {
    font-family: "Segoe UI", Roboto, sans-serif;
    background-color: var(--fundo);
    color: var(--texto);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   HEADER
======================================== */
header {
    background-color: var(--verde-principal);
    color: var(--branco);
    padding: 1rem 0 0.5rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

header h1 {
    text-align: center;
    font-size: 1.8rem;
    letter-spacing: 1px;
}

/* ========================================
   NAV
======================================== */
nav {
    display: flex;
    justify-content: center;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

nav li {
    position: relative;
}

nav a {
    display: block;
    padding: 10px 16px;
    color: var(--branco);
    font-weight: 500;
    border-radius: 6px;
    transition: 0.2s;
}

nav a:hover {
    background-color: var(--verde-hover);
    transform: translateY(-2px);
}

/* ===== SUBMENU ===== */
.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--verde-escuro);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25);
    z-index: 10;
}

.submenu li a {
    padding: 10px 14px;
    color: var(--branco);
}

.submenu li a:hover {
    background-color: var(--verde-hover);
}

li:hover > .submenu {
    display: block;
}

/* ========================================
   CONTEÚDO
======================================== */
main {
    flex: 1;
    padding: 2rem;
}

/* ========================================
   FOOTER
======================================== */
footer {
    background-color: var(--verde-principal);
    color: var(--branco);
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    margin-top: auto;
}

/* ========================================
   LOGIN
======================================== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;

    background: linear-gradient(
        135deg,
        var(--verde-principal),
        var(--verde-escuro)
    );
}

.login-box {
    background: var(--branco);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
    width: 320px;
    text-align: center;
}

.login-box h2 {
    margin-bottom: 1.5rem;
    color: #000000
}

.login-box input {
    width: 100%;
    padding: 10px;
    margin-bottom: 1rem;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-box input:focus {
    border-color: var(--verde-principal);
    outline: none;
    box-shadow: 0 0 0 2px rgba(30, 142, 106, 0.2);
}

.login-box button {
    background-color: var(--verde-principal);
    color: var(--branco);
    border: none;
    padding: 10px;
    width: 100%;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
}

.login-box button:hover {
    background-color: var(--verde-hover);
}

.botoes {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ===== ERRO ===== */
.erro {
    color: var(--erro);
    margin-top: 0.5rem;
}