/* Combined CSS for both pages */
:root {
    --primary: #1e3c72;
    --secondary: #2a5298;
    --accent: #1E90FF;
    --light: #f8f9fa;
    --dark: #1a2530;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --focus: #ff9900;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    font-size: 1rem;
}

/* Skip navigation for keyboard users */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--dark);
    color: white;
    padding: 8px;
    z-index: 10000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* RTL support */
body[dir="rtl"] {
    text-align: right;
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    flex-wrap: wrap;
}

.header-top {
    display: flex;
    justify-content: space-between;
    width: 100%;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
    outline: none;
}

.logo-container:focus {
    outline: 3px solid var(--focus);
}

.logo-container img {
    height: 50px;
    width: auto;
    max-width: 100%;
}

.brand-name {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(to right, #63b3ed, #90cdf4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.home-btn {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    border: 2px solid transparent;
}

.home-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.home-btn:focus {
    border-color: var(--focus);
    outline: none;
}

.language-switcher {
    display: flex;
    gap: 10px;
    align-items: center;
}

.language-switcher select {
    padding: 8px 12px;
    border-radius: 5px;
    background: white;
    color: var(--accent);
    border: 2px solid var(--accent);
    font-weight: 500;
    font-size: 1rem;
}

.language-switcher select:focus {
    border-color: var(--focus);
    outline: none;
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.page-header h1 {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.page-header p {
    font-size: 1.2rem;
    color: #555;
    max-width: 700px;
    margin: 0 auto;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.contact-info {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.contact-methods {
    margin-top: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    background: var(--accent);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details h3 {
    color: var(--primary);
    margin-bottom: 5px;
    font-size: 1.3rem;
}

.contact-form-section {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary);
    font-size: 1.1rem;
}

input, textarea, select {
    width: 100%;
    padding: 14px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.2);
}

textarea {
    min-height: 150px;
    resize: vertical;
}

.btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(to right, var(--accent), #0066CC);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    border: 2px solid transparent;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn:focus {
    border-color: var(--focus);
    outline: none;
}

/* Verification Section */
.verification-section {
    display: none;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px dashed #ddd;
}

.otp-container {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.otp-input {
    flex: 1;
    height: 60px;
    text-align: center;
    font-size: 1.8rem;
    font-weight: bold;
    border: 2px solid #ddd;
}

.otp-input:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.2);
}

.status-message {
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    text-align: center;
    display: none;
    font-size: 1.1rem;
}

.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.info {
    background: #cce5ff;
    color: #004085;
    border: 1px solid #b8daff;
}

.timer {
    text-align: center;
    font-weight: 600;
    margin: 10px 0;
    color: #e74c3c;
    font-size: 1.2rem;
}

.resend-link {
    text-align: center;
    margin-top: 15px;
    color: var(--accent);
    cursor: pointer;
    display: none;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: underline;
    padding: 5px;
}

.resend-link:hover {
    text-decoration: none;
}

.resend-link:focus {
    outline: 2px solid var(--focus);
    border-radius: 4px;
}

.security-info {
    background: #f8f9fa;
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 25px 0;
    border-radius: 0 8px 8px 0;
    font-size: 1rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #63b3ed, #90cdf4);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-text {
    color: #cbd5e0;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.compliance-badges {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.compliance-badges img {
    height: 50px;
    width: auto;
    max-width: 100%;
}

.legal {
    color: #a0aec0;
    font-size: 1rem;
    margin-top: 25px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.legal a {
    color: #cbd5e0;
    text-decoration: underline;
}

.legal a:focus {
    outline: 2px solid var(--focus);
    border-radius: 4px;
}

/* Accessibility Controls */
.accessibility-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 1000;
}

.accessibility-btn {
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.5rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.accessibility-btn:focus {
    border-color: var(--focus);
    outline: none;
}

/* High Contrast Mode */
body.high-contrast {
    background: black !important;
    color: white !important;
}

body.high-contrast .header,
body.high-contrast .footer {
    border: 2px solid yellow;
}

body.high-contrast section,
body.high-contrast .contact-info,
body.high-contrast .contact-form-section {
    background: #222 !important;
    border: 2px solid yellow !important;
    color: white !important;
}

/* Larger Text Mode */
body.large-text {
    font-size: 1.25rem;
}

body.large-text h1 {
    font-size: 2.5rem;
}

body.large-text h2 {
    font-size: 2rem;
}

body.large-text h3 {
    font-size: 1.5rem;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
    
    .btn:hover {
        transform: none;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 1rem;
    }
    
    .header-top {
        flex-direction: column;
        gap: 15px;
    }
    
    .header-right {
        flex-direction: column;
        width: 100%;
    }
    
    .home-btn {
        width: 100%;
        justify-content: center;
    }
    
    .language-switcher {
        width: 100%;
        justify-content: center;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1.1rem;
    }
    
    .otp-container {
        flex-wrap: wrap;
    }
    
    .otp-input {
        height: 50px;
        font-size: 1.5rem;
    }
    
    .accessibility-controls {
        bottom: 10px;
        right: 10px;
    }
    
    .accessibility-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

/* Print Styles */
@media print {
    .header, .footer, .accessibility-controls {
        display: none;
    }
    
    body {
        background: white;
        color: black;
        font-size: 12pt;
    }
    
    .container {
        padding: 0;
    }
    
    .contact-container {
        display: block;
    }
    
    .contact-info, .contact-form-section {
        box-shadow: none;
        border: 1px solid #ccc;
        margin-bottom: 20px;
    }
}

/* ===== INDEX.HTML SPECIFIC STYLES ===== */

/* Fixed Navigation Bar */
nav { 
    background-color: #1a365d; 
    overflow: hidden; 
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 0 20px;
}

nav a { 
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 18px 22px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

nav a:hover { 
    background-color: #2c5282; 
    color: #fff; 
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background-color: #63b3ed;
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 80%;
}

/* Header adjustment for fixed nav */
header {
    margin-top: 60px; /* Height of fixed nav */
}

/* Section navigation buttons */
.section-nav {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 10;
}

.nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #1E90FF;
    color: white;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    margin-top: 10px;
}

/* Smaller back-to-top button */
.nav-btn.back-to-top {
    width: 24px; /* 60% of 40px */
    height: 24px; /* 60% of 40px */
    font-size: 12px; /* 60% of 18px */
    background-color: #0066CC; /* Different color for visibility */
}

.nav-btn:hover {
    background-color: #0066CC;
    transform: translateY(-3px);
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.25);
}

/* Header styles */
header, footer { 
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white; 
    padding: 30px 20px; 
    text-align: center; 
}

.logo img {
    width: 150px;
    height: auto;
    margin-top: 10px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    position: relative;
    gap: 20px;
    border-radius: 0 0 15px 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header-right {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    margin-left: auto;
}

/* Section styles */
section { 
    margin: 40px 20px; 
    padding: 30px; 
    border-radius: 15px; 
    background-color: white; 
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08); 
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

h2 {
    color: #1e3c72;
    border-bottom: 3px solid #63b3ed;
    padding-bottom: 12px;
    margin-top: 0;
    font-size: 2rem;
}

/* About section */
#about p {
    font-size: 1.1rem;
    word-wrap: break-word;
    white-space: normal;
    overflow-wrap: break-word;
    max-width: 100%;
    line-height: 1.8;
    text-align: left;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.content-card {
    background: #f0f9ff;
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s ease;
    border: 1px solid #e2f1ff;
}

.content-card:hover {
    background: #e1f0ff;
    transform: translateY(-5px);
}

.content-card h3 {
    color: #1e3c72;
    margin-top: 0;
}

/* Technology section */
.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.tech-item {
    text-align: center;
    padding: 25px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: #e9ecef;
    transform: translateY(-5px);
}

.tech-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

/* Features section */
.feature-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.feature {
    background: #f0f9ff;
    border-radius: 12px;
    padding: 25px;
    border-left: 4px solid #1E90FF;
}

.feature h3 {
    color: #1e3c72;
    margin-top: 0;
}

.feature ul {
    padding-left: 20px;
}

.feature li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* Workflow section */
.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.step {
    text-align: center;
    padding: 25px 20px;
    background: #f0f9ff;
    border-radius: 12px;
    position: relative;
    border: 1px solid #cfe8ff;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: #1E90FF;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
}

/* Team section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    justify-items: center;
    margin: 30px 0;
}

.team-member {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 280px;
    padding: 25px;
    background: #f0f9ff;
    border-radius: 12px;
    transition: all 0.3s ease;
    text-align: center;
}

.team-member:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* Logo classes with proper sizing */
.university-logo {
    max-height: 90px;
    width: auto;
    object-fit: contain;
    margin-bottom: 15px;
}

.blockenergy-logo {
    max-height: 30px; /* Reduced size */
    width: auto;
    object-fit: contain;
    margin-bottom: 15px;
}

.team-member h3 {
    color: #1e3c72;
    margin: 15px 0 5px;
}

.governance {
    background: #f0f9ff;
    border-radius: 12px;
    padding: 25px;
    margin-top: 30px;
    border-left: 4px solid #1E90FF;
}

/* Contact section */
.contact-methods {
    background: #f0f9ff;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 25px;
}

.contact-methods p {
    margin: 15px 0;
    font-size: 1.1rem;
}

.contact-methods a {
    color: #1E90FF;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-methods a:hover {
    color: #0066CC;
    text-decoration: underline;
}

.contact-form {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
    margin-top: 0;
    color: #1e3c72;
    border-bottom: 2px solid #63b3ed;
    padding-bottom: 10px;
}

#researchContactForm {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

#researchContactForm input,
#researchContactForm textarea {
    padding: 14px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

#researchContactForm input:focus,
#researchContactForm textarea:focus {
    border-color: #1E90FF;
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.2);
}

#researchContactForm textarea {
    min-height: 150px;
    resize: vertical;
}

#researchContactForm button[type="submit"] {
    background: linear-gradient(to right, #1E90FF, #0066CC);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    margin-top: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

#researchContactForm button[type="submit"]:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #1a365d 0%, #1e3c72 100%);
    padding: 40px 20px;
    text-align: center;
    border-radius: 15px 15px 0 0;
    margin-top: 50px;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Responsive design */
@media (max-width: 992px) {
    .content-grid, .tech-stack, .feature-container, 
    .workflow-steps, .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    header {
        flex-direction: column;
        text-align: center;
    }
    
    .header-right {
        align-items: center;
        margin: 20px auto 0;
    }
}

@media (max-width: 768px) {
    nav a {
        padding: 14px 12px;
        font-size: 0.9rem;
    }
    
    .language-switcher {
        position: relative;
        top: 0;
        left: 0;
        margin-bottom: 15px;
    }
    
    .section-nav {
        bottom: 15px;
        right: 15px;
    }
    
    section {
        padding: 25px 20px;
        margin: 30px 15px;
    }
}

@media (max-width: 576px) {
    nav a {
        padding: 12px 8px;
        font-size: 0.85rem;
    }
    
    .nav-btn {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    
    .content-grid, .tech-stack, .feature-container, 
    .workflow-steps, .team-grid {
        grid-template-columns: 1fr;
    }
}