/* ===================================
   Academic Foundations Section
   Mobile-First Timeline Card Layout
   =================================== */

/* Section Container */
.education-section {
    background: linear-gradient(135deg, #0a0f1e 0%, #1a1f35 100%);
    padding: 4rem 1rem;
    position: relative;
}

.education-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--primary-color) 50%, 
        transparent 100%
    );
}

/* Timeline Container */
.education-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

/* Mobile-First: Vertical Timeline Line */
.education-timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, 
        var(--primary-color) 0%, 
        rgba(22, 163, 74, 0.3) 100%
    );
}

/* Education Card */
.education-card {
    position: relative;
    margin-left: 3rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, 
        rgba(22, 163, 74, 0.08) 0%, 
        rgba(16, 185, 129, 0.04) 100%
    );
    border: 1px solid rgba(22, 163, 74, 0.25);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.education-card:last-child {
    margin-bottom: 0;
}

.education-card:hover {
    transform: translateX(8px);
    border-color: rgba(22, 163, 74, 0.5);
    box-shadow: 0 8px 24px rgba(22, 163, 74, 0.2);
}

/* Timeline Marker */
.timeline-marker {
    position: absolute;
    left: -2.5rem;
    top: 1.75rem;
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    border: 3px solid #0a0f1e;
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.2);
    z-index: 2;
}

.education-card:hover .timeline-marker {
    background: var(--accent-color);
    box-shadow: 0 0 0 6px rgba(22, 163, 74, 0.3);
}

/* Card Content */
.card-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Degree Name - Prominent */
.degree-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

/* Institution Name - Muted */
.institution-name {
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.65);
    margin: 0;
    line-height: 1.5;
}

/* Education Period - Clear and Visible */
.education-period {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0.5rem 0 0 0;
}

.education-period i {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ===================================
   Responsive Design
   =================================== */

/* Small Mobile (360px - 480px) */
@media screen and (max-width: 480px) {
    .education-section {
        padding: 3rem 0.75rem;
    }

    .education-timeline {
        padding: 1.5rem 0;
    }

    .education-timeline::before {
        left: 0.75rem;
    }

    .education-card {
        margin-left: 2.25rem;
        margin-bottom: 1.5rem;
        padding: 1.25rem;
        border-radius: 10px;
    }

    .timeline-marker {
        left: -1.875rem;
        top: 1.5rem;
        width: 12px;
        height: 12px;
    }

    .degree-name {
        font-size: 1.125rem;
    }

    .institution-name {
        font-size: 0.9375rem;
    }

    .education-period {
        font-size: 0.8125rem;
    }
}

/* Tablet (481px - 768px) */
@media screen and (min-width: 481px) and (max-width: 768px) {
    .education-section {
        padding: 3.5rem 1.5rem;
    }

    .education-card {
        padding: 1.75rem;
    }

    .degree-name {
        font-size: 1.375rem;
    }

    .institution-name {
        font-size: 1.0625rem;
    }
}

/* Desktop (769px+) - Two Column or Stacked */
@media screen and (min-width: 769px) {
    .education-section {
        padding: 5rem 2rem;
    }

    .education-timeline {
        max-width: 1000px;
        padding: 2.5rem 0;
    }

    .education-timeline::before {
        left: 50%;
        transform: translateX(-50%);
    }

    .education-card {
        width: calc(50% - 2rem);
        margin-left: 0;
        padding: 2rem;
    }

    .education-card:nth-child(odd) {
        margin-right: auto;
        margin-left: 0;
    }

    .education-card:nth-child(even) {
        margin-left: auto;
        margin-right: 0;
    }

    .timeline-marker {
        left: auto;
        right: -2.5rem;
    }

    .education-card:nth-child(even) .timeline-marker {
        right: auto;
        left: -2.5rem;
    }

    .education-card:hover {
        transform: translateY(-4px);
    }

    .degree-name {
        font-size: 1.5rem;
    }

    .institution-name {
        font-size: 1.125rem;
    }

    .education-period {
        font-size: 0.9375rem;
    }
}

/* Large Desktop (1200px+) */
@media screen and (min-width: 1200px) {
    .education-timeline {
        max-width: 1100px;
    }

    .education-card {
        padding: 2.25rem;
    }
}