/* ================================================== */
/* PHD-PROGRAM.CSS */
/* Isolated CSS for PhD Program Page - MBA Pattern */
/* Scoped with .phd-program-page class */
/* Uses CSS variables from main-config.php */
/* Mobile Responsive: 480px, 768px, 1024px */
/* ================================================== */

/* ==================== */
/* BASE STYLES - SCOPED TO PHD PAGE */
/* ==================== */
.phd-program-page .phd-program-container {
    font-family: var(--phd-font-primary, 'Montserrat', sans-serif);
    color: var(--phd-text-primary, #212121);
    line-height: 1.6;
}

.phd-program-page .container {
    max-width: var(--phd-container-width, 1200px);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ==================== */
/* BACKGROUND CLASSES */
/* ==================== */
.phd-program-page .bg-white {
    background-color: var(--phd-white, #FFFFFF);
}

.phd-program-page .bg-grey {
    background-color: var(--phd-light, #F5F5F5);
}

.phd-program-page .bg-light {
    background-color: var(--phd-light, #F5F5F5);
}

/* ==================== */
/* SECTION COMMON STYLES */
/* ==================== */
.phd-program-page .phd-section {
    padding: var(--phd-section-spacing, 80px) 0;
    position: relative;
}

/* Section Header with Yellow Underline */
.phd-program-page .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.phd-program-page .section-title {
    font-size: var(--phd-h2-size, 2.2rem);
    color: var(--phd-primary, #1a237e);
    margin-bottom: 15px;
    font-weight: 600;
    position: relative;
    display: inline-block;
}

.phd-program-page .section-underline {
    height: 3px;
    width: 80px;
    background-color: var(--phd-accent, #ff6f00);
    margin: 0 auto;
    border-radius: 2px;
}

/* ==================== */
/* HERO SECTION */
/* ==================== */
.phd-program-page .phd-hero-section {
    background: linear-gradient(135deg, var(--phd-primary, #1a237e) 0%, #1a2530 100%);
    color: var(--phd-white, #FFFFFF);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.phd-program-page .phd-hero-title {
    font-size: var(--phd-h1-size, 2.8rem);
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.phd-program-page .phd-hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.phd-program-page .phd-hero-cta {
    margin-top: 30px;
}

/* Hidden CTA Button */
.phd-program-page .hidden-cta {
    display: none !important;
    visibility: hidden !important;
    opacity: 0 !important;
    height: 0 !important;
    width: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 0 !important;
    position: absolute !important;
    left: -9999px !important;
}

/* Button Styles (from MBA pattern) */
.phd-program-page .btn {
    display: inline-block;
    padding: 12px 32px;
    background-color: var(--phd-accent, #ff6f00);
    color: var(--phd-white, #FFFFFF);
    text-decoration: none;
    border-radius: var(--phd-border-radius, 8px);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--phd-transition-normal, 0.3s ease);
    font-size: var(--phd-body-size, 1rem);
}

.phd-program-page .btn:hover {
    background-color: color-mix(in srgb, var(--phd-accent, #ff6f00) 80%, black 20%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 111, 0, 0.3);
}

.phd-program-page .btn-primary {
    background-color: var(--phd-accent, #ff6f00);
    color: var(--phd-white, #FFFFFF);
}

/* ==================== */
/* OVERVIEW SECTION */
/* ==================== */
.phd-program-page .phd-overview-content {
    max-width: 900px;
    margin: 0 auto;
}

.phd-program-page .phd-overview-text {
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.8;
    color: var(--phd-text-secondary, #666666);
}

.phd-program-page .phd-overview-text:last-child {
    margin-bottom: 0;
}

/* ==================== */
/* AREA OF RESEARCH SECTION */
/* ==================== */
.phd-program-page .research-areas-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.phd-program-page .research-area-card {
    background: var(--phd-white, #FFFFFF);
    padding: 30px;
    border-radius: var(--phd-border-radius, 8px);
    box-shadow: var(--phd-box-shadow, 0 4px 12px rgba(0, 0, 0, 0.08));
    text-align: center;
    transition: var(--phd-transition-normal, 0.3s ease);
    border-top: 4px solid var(--phd-accent, #ff6f00);
}

.phd-program-page .research-area-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.phd-program-page .research-area-icon {
    font-size: 2.5rem;
    color: var(--phd-accent, #ff6f00);
    margin-bottom: 20px;
}

.phd-program-page .research-area-title {
    font-size: var(--phd-h3-size, 1.5rem);
    color: var(--phd-primary, #1a237e);
    margin-bottom: 15px;
    font-weight: 600;
}

.phd-program-page .research-area-desc {
    color: var(--phd-text-secondary, #666666);
    font-size: var(--phd-body-size, 1rem);
}

/* ==================== */
/* FACULTY EXPERTISE SECTION */
/* ==================== */
.phd-program-page .faculty-expertise-card {
    background: var(--phd-white, #FFFFFF);
    padding: 40px;
    border-radius: var(--phd-border-radius, 8px);
    box-shadow: var(--phd-box-shadow, 0 4px 12px rgba(0, 0, 0, 0.08));
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    border-left: 5px solid var(--phd-accent, #ff6f00);
}

.phd-program-page .faculty-icon {
    font-size: 3rem;
    color: var(--phd-accent, #ff6f00);
    margin-bottom: 25px;
}

.phd-program-page .faculty-expertise-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--phd-text-secondary, #666666);
    font-style: italic;
}

/* ==================== */
/* RESEARCH FACILITIES SECTION */
/* ==================== */
.phd-program-page .facilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.phd-program-page .facility-card {
    background: var(--phd-white, #FFFFFF);
    padding: 25px;
    border-radius: var(--phd-border-radius, 8px);
    text-align: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: var(--phd-transition-normal, 0.3s ease);
}

.phd-program-page .facility-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.phd-program-page .facility-icon {
    font-size: 2.5rem;
    color: var(--phd-accent, #ff6f00);
    margin-bottom: 15px;
}

.phd-program-page .facility-title {
    font-size: 1.2rem;
    color: var(--phd-primary, #1a237e);
    font-weight: 600;
}

.phd-program-page .facilities-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--phd-text-secondary, #666666);
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

/* ==================== */
/* BENEFITS SECTION */
/* ==================== */
.phd-program-page .benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.phd-program-page .benefit-card {
    background: var(--phd-white, #FFFFFF);
    padding: 25px;
    border-radius: var(--phd-border-radius, 8px);
    box-shadow: var(--phd-box-shadow, 0 4px 12px rgba(0, 0, 0, 0.08));
    display: flex;
    align-items: flex-start;
    gap: 20px;
    transition: var(--phd-transition-normal, 0.3s ease);
    border-left: 4px solid var(--phd-accent, #ff6f00);
}

.phd-program-page .benefit-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.phd-program-page .benefit-icon {
    font-size: 2rem;
    min-width: 60px;
    height: 60px;
    background: rgba(255, 111, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--phd-accent, #ff6f00);
}

.phd-program-page .benefit-text {
    font-size: var(--phd-body-size, 1rem);
    line-height: 1.6;
    color: var(--phd-text-secondary, #666666);
    margin: 0;
    flex: 1;
}

/* ==================== */
/* RESPONSIVE DESIGN */
/* ==================== */

/* Tablet: 1024px and below */
@media (max-width: 1024px) {
    .phd-program-page .phd-section {
        padding: 70px 0;
    }
    
    .phd-program-page .research-areas-grid,
    .phd-program-page .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .phd-program-page .facilities-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

/* Tablet: 768px and below */
@media (max-width: 768px) {
    .phd-program-page .phd-section {
        padding: 60px 0;
    }
    
    .phd-program-page .phd-hero-section {
        padding: 80px 0;
    }
    
    .phd-program-page .phd-hero-subtitle {
        font-size: 1.1rem;
    }
    
    .phd-program-page .research-areas-grid,
    .phd-program-page .benefits-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
    }
    
    .phd-program-page .facilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .phd-program-page .faculty-expertise-card {
        padding: 30px 20px;
    }
    
    .phd-program-page .benefit-card {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .phd-program-page .benefit-icon {
        margin: 0 auto;
    }
}

/* Mobile: 480px and below */
@media (max-width: 480px) {
    .phd-program-page .phd-section {
        padding: 50px 0;
    }
    
    .phd-program-page .phd-hero-section {
        padding: 60px 0;
    }
    
    .phd-program-page .container {
        padding: 0 15px;
    }
    
    .phd-program-page .section-header {
        margin-bottom: 40px;
    }
    
    .phd-program-page .research-areas-grid,
    .phd-program-page .benefits-grid {
        gap: 20px;
    }
    
    .phd-program-page .research-area-card,
    .phd-program-page .benefit-card,
    .phd-program-page .facility-card {
        padding: 20px;
    }
    
    .phd-program-page .facilities-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .phd-program-page .phd-overview-text {
        font-size: 1rem;
    }
}

/* ==================== */
/* PRINT STYLES */
/* ==================== */
@media print {
    .phd-program-page .hidden-cta,
    .phd-program-page .btn {
        display: none !important;
    }
    
    .phd-program-page .phd-section {
        padding: 20px 0 !important;
        break-inside: avoid;
    }
    
    .phd-program-page .phd-hero-section {
        background: white !important;
        color: black !important;
        padding: 30px 0 !important;
    }
}