/* styles/home.css */

/* =========== HERO SECTION ============ */
body .hero-section {
    background: none;
    padding: 0 !important;
    position: relative;
    overflow: visible;
    min-height: auto;
}

.combined-hero-nav {
    background: var(--background);
    padding: var(--space-8) var(--space-6) var(--space-12) var(--space-6);
    position: relative;
    overflow: hidden;
}

.combined-hero-nav::before {
    display: none;
}

.combined-hero-nav::after {
    display: none;
}

/* Floating animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-background-pattern {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px; /* Increased size */
    height: 300px; /* Increased size */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 0;
    animation: float 8s ease-in-out infinite; /* Added animation */
}

.hero-background-pattern svg {
    width: 100%;
    height: 100%;
    color: var(--text-secondary); /* Changed to a more visible color */
    opacity: 0.1; /* Overall opacity for the pattern */
}

.hero-container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: var(--space-12) var(--space-6) var(--space-10) var(--space-6);
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-content {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    width: 100%;
}

/* Engaging visual element to guide users to navigation */
.hero-content::after {
    display: none;
}

/* Add subtle pulsing animation */
@keyframes pulse {
    0%, 100% { 
        transform: translateX(-50%) scale(1);
        opacity: 0.8;
    }
    50% { 
        transform: translateX(-50%) scale(1.1);
        opacity: 1;
    }
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-6);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin-bottom: 0 !important;  
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: var(--font-normal);
}

/* University integration in hero */
.hero-content::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--primary));
    border-radius: var(--radius-full);
    opacity: 0.3;
}



/* =========== LANDING NAVIGATION SECTION ============ */
.landing-nav-section {
    padding: 0;
    background-color: var(--background);
    position: relative;
    overflow: hidden;
    padding-top: var(--space-16);
}

/* FAQ Navigation Actions Container */
.landing-nav-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

/* Engaging visual connector from hero */
.landing-nav-section::after {
    display: none;
}


.landing-nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    position: relative;
}

/* Visual separator between sections */
.landing-nav-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2px;
    height: 60%;
    background: linear-gradient(to bottom,
        transparent,
        rgba(0, 122, 255, 0.2) 20%,
        rgba(88, 86, 214, 0.2) 80%,
        transparent
    );
    z-index: 1;
}

.landing-nav-container::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    z-index: 2;
    box-shadow: 0 0 0 4px var(--background-secondary);
}

.landing-nav-column {
    padding: var(--space-8) var(--space-10);
    background: var(--surface);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative;
    overflow: hidden;
    z-index: 3;
}

.landing-nav-column:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--primary);
}

.landing-nav-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-5);
    line-height: var(--leading-tight);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Academic Icons for Cards */
.academic-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* Card Badge System */
.card-badge {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    background: var(--primary);
    color: white;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Student Section Styling */
.landing-nav-column:first-child {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.02), rgba(0, 122, 255, 0.01));
    border-left: 4px solid var(--primary);
}

.landing-nav-column:first-child .card-badge {
    background: var(--primary);
}

.landing-nav-column:first-child .academic-icon {
    background: linear-gradient(135deg, var(--primary), #0051D5);
}

.landing-nav-column:first-child:hover {
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.04), rgba(0, 122, 255, 0.02));
    border-left-color: #0051D5;
    box-shadow: 0 20px 40px rgba(0, 122, 255, 0.15);
}

/* Researcher Section Styling */
.landing-nav-column:last-child {
    background: linear-gradient(135deg, rgba(88, 86, 214, 0.02), rgba(88, 86, 214, 0.01));
    border-left: 4px solid var(--secondary);
}

.landing-nav-column:last-child .card-badge {
    background: var(--secondary);
}

.landing-nav-column:last-child .academic-icon {
    background: linear-gradient(135deg, var(--secondary), #4A47A3);
}

.landing-nav-column:last-child:hover {
    background: linear-gradient(135deg, rgba(88, 86, 214, 0.04), rgba(88, 86, 214, 0.02));
    border-left-color: #4A47A3;
    box-shadow: 0 20px 40px rgba(88, 86, 214, 0.15);
}

.landing-nav-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    max-width: 450px;
    margin-bottom: var(--space-8);
}

.landing-nav-link {
    color: var(--primary);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: all var(--transition-normal);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    background-color: rgba(0, 122, 255, 0.05);
    border: 1px solid rgba(0, 122, 255, 0.2);
}

/* Primary link - main CTA */
.landing-nav-link-primary {
    color: white;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    border: none;
    box-shadow: 0 2px 10px rgba(33, 150, 243, 0.3), 0 1px 3px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.landing-nav-link-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0) 100%);
    pointer-events: none;
}

.landing-nav-link-primary:hover {
    background: linear-gradient(135deg, #1E88E5 0%, #1565C0 100%);
    gap: var(--space-3);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4), 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Secondary link - FAQ link */
.landing-nav-link-secondary {
    font-size: var(--text-base);
    background-color: rgba(33, 150, 243, 0.06);
    border: 1.5px solid rgba(33, 150, 243, 0.25);
    color: #1976D2;
    padding: var(--space-2) var(--space-3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.landing-nav-link-secondary:hover {
    color: #1565C0;
    background-color: rgba(33, 150, 243, 0.12);
    border-color: rgba(33, 150, 243, 0.5);
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.2);
}

.landing-nav-link-secondary svg {
    width: 18px;
    height: 18px;
}

.landing-nav-link svg {
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.landing-nav-link-primary:hover svg {
    transform: translateX(3px);
}

.landing-nav-link-secondary:hover svg {
    transform: scale(1.1);
}

/* =========== FAQ SECTION ============ */
.faq-section {
    padding: var(--space-12) var(--space-6) var(--space-12);
    background-color: var(--background-secondary);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-main-title {
    text-align: center;
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-10);
}

.faq-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-10);
    background: var(--gray-100);
    padding: var(--space-1);
    border-radius: var(--radius-xl);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.faq-toggle-btn {
    flex: 1;
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    border: none;
    background: transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
}

.faq-toggle-btn.active {
    background: var(--surface);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.faq-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.faq-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.faq-item {
    background: var(--surface);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-item.open {
    border-color: rgba(0, 122, 255, 0.3);
    box-shadow: 0 2px 12px rgba(0, 122, 255, 0.1);
}

.faq-item:last-child {
    margin-bottom: 0;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question:focus {
    outline: none;
    color: var(--primary);
}

.faq-question::after {
    content: '+';
    font-size: 20px;
    color: var(--primary);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 300;
    line-height: 1;
    opacity: 0.7;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.faq-question:hover::after {
    opacity: 1;
    transform: scale(1.1);
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
    opacity: 1;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    background-color: rgba(248, 250, 252, 0.7);
    border-top: 1px solid var(--border-light);
}

.faq-answer p {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    margin: 0;
}

.faq-answer p + p {
    margin-top: var(--space-3);
}

.faq-answer ul {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    margin: var(--space-3) 0;
    padding-left: var(--space-5);
}

.faq-answer ol {
    color: var(--text-secondary);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    margin: var(--space-3) 0;
    padding-left: var(--space-5);
}

.faq-answer li {
    margin-bottom: var(--space-2);
}

.faq-answer li:last-child {
    margin-bottom: 0;
}

.faq-answer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: color 0.2s ease;
}

.faq-answer a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.faq-item.open .faq-answer {
    max-height: 650px;
    padding: var(--space-5) var(--space-6) var(--space-6) var(--space-6);
}

/* =========== RESPONSIVE STYLES ============ */
@media (max-width: 768px) {
    .hero-container {
        padding: var(--space-8) var(--space-4) var(--space-3) var(--space-4);
        margin: 0 var(--space-2);
    }
    
    /* Hide visual connectors on mobile for cleaner look */
    .hero-content::after,
    .landing-nav-section::after {
        display: none;
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .academic-icon {
        width: 44px;
        height: 44px;
        font-size: 20px;
    }
    
    .hero-subtitle {
        font-size: var(--text-lg);
    }
    
    .landing-nav-container {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .landing-nav-container::before,
    .landing-nav-container::after {
        display: none;
    }
    
    .landing-nav-column {
        padding: var(--space-6) var(--space-8);
    }
    
    .landing-nav-title, .faq-main-title {
        font-size: var(--text-3xl);
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
    
    .faq-toggle {
        max-width: 280px;
        margin-bottom: var(--space-10);
    }
    
    .faq-toggle-btn {
        padding: var(--space-2) var(--space-4);
        font-size: var(--text-xs);
    }
    
    .faq-question {
        padding: var(--space-4) var(--space-5);
        font-size: var(--text-base);
    }
    
    .faq-question::after {
        font-size: 18px;
        width: 18px;
        height: 18px;
    }
    
    .faq-answer p {
        padding: var(--space-4) var(--space-5);
    }

    /* Hide background shapes on mobile to prevent overlap */
    .combined-hero-nav::before,
    .combined-hero-nav::after {
        display: none;
    }
    .hero-background-pattern {
        display: none;
    }

}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--space-6) var(--space-4) var(--space-4);
    }
    
    .hero-container {
        padding: var(--space-6) var(--space-4) var(--space-2) var(--space-4);
        margin: 0 var(--space-2);
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--text-base);
    }
    
    .landing-nav-section {
        padding: var(--space-3) var(--space-4) var(--space-10);
    }
    
    .landing-nav-column {
        padding: var(--space-5) var(--space-6);
    }
    
    .landing-nav-title {
        font-size: var(--text-2xl);
    }
    
    .academic-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .card-badge {
        top: var(--space-4);
        right: var(--space-4);
        padding: var(--space-1) var(--space-2);
        font-size: 10px;
    }
    
    .landing-nav-description {
        font-size: var(--text-base);
    }

    .landing-nav-actions {
        gap: var(--space-2);
    }

    .landing-nav-link {
        font-size: var(--text-base);
        padding: var(--space-2) var(--space-3);
    }

    .landing-nav-link-primary {
        padding: var(--space-3) var(--space-4);
    }

    .landing-nav-link-secondary {
        font-size: var(--text-sm);
        padding: var(--space-2) var(--space-3);
    }
    
    .faq-section {
        padding: var(--space-12) var(--space-4) var(--space-12);
    }
    
    .faq-main-title {
        font-size: var(--text-2xl);
        margin-bottom: var(--space-10);
    }
    
    .faq-toggle {
        max-width: 250px;
        margin-bottom: var(--space-8);
        padding: 3px;
    }
    
    .faq-toggle-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 11px;
    }
    
    .faq-question {
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-sm);
    }
    
    .faq-question::after {
        font-size: 16px;
        width: 16px;
        height: 16px;
    }
    
    .faq-answer p {
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-sm);
    }
}