:root {
    --resizer-primary: #0d9488;
    --resizer-secondary: #0891b2;
    --resizer-accent: #06b6d4;
    --resizer-bg-light: #f0fdfa;
    --resizer-gradient: linear-gradient(135deg, #0d9488 0%, #0891b2 100%);
}

body {
    font-family: 'Poppins', sans-serif;
    color: #333;
    line-height: 1.6;
}

.navbar {
    background: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    padding: 1rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--resizer-primary) !important;
}

.hero-section {
    background: var(--resizer-bg-light);
    position: relative;
    overflow: hidden;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

h1 {
    color: #2d3436;
    font-weight: 700;
}

.btn-primary {
    background: var(--resizer-gradient);
    border: none;
    box-shadow: 0 4px 15px rgba(13, 148, 136, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
    background: var(--resizer-gradient);
}

.card {
    border: none;
    border-radius: 15px;
    transition: transform 0.3s;
}

.drop-zone {
    border: 3px dashed #dee2e6;
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: white;
}

.drop-zone.active {
    border-color: var(--resizer-primary);
    background: rgba(13, 148, 136, 0.05);
}

.feature-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    height: 100%;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.step-card {
    text-align: center;
    padding: 20px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--resizer-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-weight: 700;
}

.footer {
    background: #f8f9fa;
    border-top: 1px solid #eee;
}

.footer h5 {
    color: #2d3436;
    font-weight: 700;
}

.footer a {
    color: #636e72;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--resizer-primary);
}