:root {
    --primary-red: #e5322d;
    --dark-bg: #33333b;
    --light-grey: #f3f0f1;
    --text-color: #333;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #fff;
    color: var(--text-color);
}

/* Navbar Style */
.navbar {
    background: #fff !important;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.navbar-brand {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: #333 !important;
}

.brand-z {
    color: #f39c12;
}

/* Hero Section */
#hero-section {
    background-color: var(--light-grey);
    padding: 80px 0 60px;
    text-align: center;
}

#hero-section h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

#hero-section p {
    font-size: 1.3rem;
    color: #666;
    max-width: 900px;
    margin: 0 auto;
}

/* Filters Style (iLovePDF Pills) */
.filter-container {
    padding: 40px 0;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.btn-pill {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 30px;
    padding: 8px 24px;
    font-weight: 600;
    color: #555;
    transition: 0.3s;
}

.btn-pill:hover,
.btn-pill.active {
    background: var(--dark-bg);
    color: #fff;
    border-color: var(--dark-bg);
}

/* Tool Cards */
.tool-card {
    background: #fff;
    border: 1px solid #f0f0f0;
    border-radius: 15px;
    padding: 35px 25px;
    height: 100%;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    cursor: pointer;
    text-align: left;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
    border-color: #e5322d;
}

.tool-icon {
    font-size: 2.8rem;
    color: var(--primary-red);
    margin-bottom: 20px;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.card-text {
    font-size: 0.95rem;
    color: #777;
    line-height: 1.5;
}