/* Challenge Page Specialized Styling */

:root {
    --gradient-tech: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    --gradient-business: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-engineering: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --color-dark: #1F2937;
    --color-light: #F3F4F6;
    --color-gray: #6B7280;
}

.challenge-container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.challenge-header {
    text-align: center;
    margin-bottom: 2rem;
}

.challenge-header h1 {
    font-size: 2.5rem;
    color: var(--color-dark);
    font-weight: 900;
}

.challenge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.challenge-card {
    background: var(--color-light);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.challenge-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    transition: all 0.3s ease;
}

.challenge-card.tech::before {
    background: var(--gradient-tech);
}

.challenge-card.business::before {
    background: var(--gradient-business);
}

.challenge-card.engineering::before {
    background: var(--gradient-engineering);
}

.challenge-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.challenge-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.challenge-card.tech .challenge-icon {
    color: #3B82F6;
}

.challenge-card.business .challenge-icon {
    color: #10B981;
}

.challenge-card.engineering .challenge-icon {
    color: #F59E0B;
}

.challenge-card h3 {
    font-size: 1.5rem;
    color: var(--color-dark);
    margin-bottom: 1rem;
}

.challenge-card p {
    color: var(--color-gray);
    margin-bottom: 1.5rem;
}

.challenge-btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
}

.challenge-card.tech .challenge-btn {
    background: var(--gradient-tech);
    color: white;
}

.challenge-card.business .challenge-btn {
    background: var(--gradient-business);
    color: white;
}

.challenge-card.engineering .challenge-btn {
    background: var(--gradient-engineering);
    color: white;
}

.challenge-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.challenge-progress {
    background: white;
    border-radius: 15px;
    padding: 1rem;
    margin-top: 1.5rem;
}

.progress-bar {
    height: 10px;
    background: var(--color-light);
    border-radius: 50px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    transition: width 0.5s ease-in-out;
}

.challenge-card.tech .progress-bar-fill {
    background: var(--gradient-tech);
}

.challenge-card.business .progress-bar-fill {
    background: var(--gradient-business);
}

.challenge-card.engineering .progress-bar-fill {
    background: var(--gradient-engineering);
}