/* ============================================
   HEADER STYLES - ReceitasTech
   Componente reutilizável para todas as páginas
   ============================================ */

/* ===== HEADER PRINCIPAL ===== */
.header {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.15);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    gap: 2rem;
}

/* ===== LOGO ===== */
.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: white;
    transition: transform 0.3s ease;
}

.logo a:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 36px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

.logo-text {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(180deg, #ffffff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* ===== NAVEGAÇÃO CENTRAL ===== */
.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 0;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: white;
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 100%;
}

/* ===== BOTÕES DE AUTENTICAÇÃO ===== */
.auth-nav {
    display: flex;
    gap: 12px;
    align-items: center;
}

.btn-auth {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
    color: white;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-auth::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left 0.3s ease;
}

.btn-auth:hover::before {
    left: 100%;
}

.btn-icon {
    font-size: 18px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

.btn-login {
    border-color: white;
}

.btn-login:hover {
    background: white;
    color: #FF6B6B;
    border-color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-register {
    background: white;
    color: #FF6B6B;
    border-color: white;
}

.btn-register:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* ===== MENU TOGGLE (MOBILE) ===== */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* ===== RESPONSIVIDADE ===== */

/* Tablets */
@media (max-width: 992px) {
    .header-container {
        padding: 0 1.5rem;
        height: 70px;
    }

    .nav-menu ul {
        gap: 1.5rem;
    }

    .logo-text {
        font-size: 24px;
    }

    .logo-icon {
        font-size: 32px;
    }

    .btn-auth {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .header-container {
        height: 65px;
        padding: 0 1rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 65px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 65px);
        background: linear-gradient(180deg, #FF6B6B 0%, #FF8E53 100%);
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem;
        transition: left 0.4s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu ul {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }

    .nav-menu li {
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }

    .nav-menu a {
        display: block;
        padding: 1.2rem;
        font-size: 18px;
    }

    .nav-menu a::before {
        display: none;
    }

    .auth-nav {
        gap: 8px;
    }

    .btn-auth {
        padding: 8px 16px;
        font-size: 13px;
        gap: 6px;
    }

    .btn-auth span:not(.btn-icon) {
        display: none;
    }

    .btn-icon {
        font-size: 20px;
    }
}

/* Mobile pequeno */
@media (max-width: 480px) {
    .header-container {
        gap: 1rem;
        height: 60px;
        padding: 0 0.75rem;
    }

    .logo-text {
        font-size: 20px;
    }

    .logo-icon {
        font-size: 28px;
    }

    .nav-menu {
        top: 60px;
        height: calc(100vh - 60px);
    }

    .btn-auth {
        padding: 8px 12px;
        border-width: 2px;
    }

    .btn-icon {
        font-size: 18px;
    }
}