:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --accent-color: #45b7d1;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
}

body {
    font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;
    background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);
    min-height:100vh;
}

/* Navbar */
.navbar {
    background:rgba(255,255,255,.95);
    backdrop-filter:blur(10px);
    box-shadow:0 2px 20px rgba(0,0,0,.1);
}
.navbar-brand {
    font-weight:bold;
    color:var(--primary-color)!important;
    font-size:1.5rem;
}

/* Hero */
.hero-section {
    background:linear-gradient(rgba(0,0,0,.4),rgba(0,0,0,.4)),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%23ff6b6b" width="1200" height="600"/><circle fill="%234ecdc4" cx="200" cy="150" r="80" opacity="0.3"/><circle fill="%2345b7d1" cx="800" cy="300" r="120" opacity="0.3"/><circle fill="%23feca57" cx="1000" cy="100" r="60" opacity="0.3"/></svg>');
    background-size:cover;
    background-position:center;
    color:#fff;
    padding:100px 0;
    text-align:center;
}
.hero-title { font-size:3.5rem; font-weight:bold; margin-bottom:20px; text-shadow:2px 2px 4px rgba(0,0,0,.5); }
.hero-subtitle { font-size:1.3rem; margin-bottom:30px; opacity:.9; }

/* Cards */
.category-card {
    background:#fff;
    border-radius:20px;
    padding:40px 20px;
    text-align:center;
    box-shadow:0 10px 30px rgba(0,0,0,.1);
    transition:all .3s ease;
    cursor:pointer;
    border:none;
    height:100%;
}
.category-card:hover { transform:translateY(-10px); box-shadow:0 20px 40px rgba(0,0,0,.2); }
.category-icon {
    font-size:4rem;
    margin-bottom:20px;
    background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}
.category-title { font-size:1.5rem; font-weight:bold; color:var(--dark-color); margin-bottom:10px; }
.category-description { color:#666; font-size:.9rem; }

/* Receitas */
.recipe-card {
    background:#fff;
    border-radius:15px;
    overflow:hidden;
    box-shadow:0 5px 20px rgba(0,0,0,.1);
    transition:all .3s ease;
    border:none;
    height:100%;
}
.recipe-card:hover { transform:translateY(-5px); box-shadow:0 15px 30px rgba(0,0,0,.2); }
.recipe-image { height:200px; background:linear-gradient(135deg,#ff6b6b,#4ecdc4); display:flex; align-items:center; justify-content:center; color:#fff; font-size:3rem; }
.recipe-content { padding:20px; }
.recipe-title { font-weight:bold; color:var(--dark-color); margin-bottom:10px; }
.recipe-meta { display:flex; justify-content:space-between; align-items:center; margin-top:15px; }
.recipe-meta span { font-size:.8rem; color:#666; }

/* Dificuldade */
.difficulty-badge { padding:4px 8px; border-radius:12px; font-size:.7rem; font-weight:bold; }
.difficulty-facil { background:#d4edda; color:#155724; }
.difficulty-medio { background:#fff3cd; color:#856404; }
.difficulty-dificil { background:#f8d7da; color:#721c24; }

/* Botões */
.btn-primary {
    background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));
    border:none; border-radius:25px; padding:12px 30px; font-weight:bold;
    transition:all .3s ease;
}
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 5px 15px rgba(0,0,0,.2); }

/* Floating action */
.floating-action { position:fixed; bottom:30px; right:30px; z-index:1000; }
.floating-btn { width:60px; height:60px; border-radius:50%; background:linear-gradient(135deg,var(--primary-color),var(--secondary-color)); border:none; color:#fff; font-size:1.5rem; box-shadow:0 5px 20px rgba(0,0,0,.3); transition:all .3s ease; }
.floating-btn:hover { transform:scale(1.1); box-shadow:0 8px 25px rgba(0,0,0,.4); }