/* Modern Professional MCQ Test Application - Main CSS */
:root {
    /* Primary Colors - Steel Industry Theme */
    --primary: #1a365d;
    --primary-dark: #0d1b2a;
    --primary-light: #2c5282;
    --primary-gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    
    /* Accent Colors */
    --accent: #e63946;
    --accent-dark: #d90429;
    --accent-light: #ff6b6b;
    --accent-gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    
    /* Secondary Colors */
    --secondary: #2a9d8f;
    --secondary-dark: #21867a;
    --secondary-light: #48c9b0;
    --warning: #f39c12;
    --success: #27ae60;
    --info: #3498db;
    
    /* Neutral Colors */
    --light: #f8f9fa;
    --light-gray: #e9ecef;
    --gray: #95a5a6;
    --dark: #2c3e50;
    --dark-gray: #34495e;
    
    /* Utility Colors */
    --border: #dee2e6;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.15);
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --font-secondary: 'Raleway', sans-serif;
    
    /* Spacing */
    --radius: 16px;
    --radius-sm: 8px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --container-padding: 2rem;
    --section-spacing: 5rem;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1.5rem;
    color: var(--dark-gray);
}

/* Header Styles */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 60px;
    width: 60px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 3px solid var(--primary);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.logo-img:hover {
    transform: rotate(5deg) scale(1.05);
}

.logo-text {
    line-height: 1.3;
}

.company-name {
    font-family: var(--font-heading);
    font-weight: 900;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.5px;
}

.company-tagline {
    font-family: var(--font-secondary);
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 500;
    margin: 0;
}

/* Navigation */
.nav-menu {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
    transform: translateX(-100%);
    transition: var(--transition);
}

.nav-link:hover::before {
    transform: translateX(0);
}

.nav-link:hover,
.nav-link.active {
    background: rgba(26, 54, 93, 0.05);
    color: var(--primary);
}

.nav-link i {
    font-size: 1.1rem;
}

.admin-btn {
    background: var(--accent-gradient);
    color: white !important;
}

.admin-btn:hover {
    background: var(--accent-dark) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 6rem 0;
    background: var(--primary-gradient);
    color: white;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.03" d="M0,128L48,138.7C96,149,192,171,288,170.7C384,171,480,149,576,128C672,107,768,85,864,96C960,107,1056,149,1152,149.3C1248,149,1344,107,1392,85.3L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.company-highlight {
    display: block;
    font-size: 4.5rem;
    font-weight: 900;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff 0%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

.hero-subtitle {
    display: block;
    font-size: 2rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    background: var(--light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-hero {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
    border-radius: 50px;
}

.btn-wave {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover .btn-wave {
    width: 300px;
    height: 300px;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 200px;
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.stat-item i {
    font-size: 2.5rem;
    color: white;
}

.stat-item div h3 {
    font-size: 2rem;
    margin: 0;
    color: white;
}

.stat-item div p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Hero Illustration */
.hero-illustration {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.1;
}

.illustration-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.illustration-item {
    position: absolute;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    animation: float 6s ease-in-out infinite;
}

.test-icon {
    background: var(--accent-gradient);
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.result-icon {
    background: var(--secondary);
    top: 0;
    right: 0;
    animation-delay: 2s;
}

.cv-icon {
    background: var(--warning);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

/* Sections */
section {
    padding: var(--section-spacing) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(26, 54, 93, 0.1);
    color: var(--primary);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features-section {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--light-gray);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--primary-gradient);
    border-radius: var(--radius) var(--radius) 0 0;
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.icon-wrapper {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin: 0 auto;
}

.time-efficient { background: var(--info); }
.instant-results { background: var(--success); }
.secure-process { background: var(--primary); }
.cv-upload { background: var(--warning); }

.feature-content {
    text-align: center;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature-description {
    color: var(--gray);
    font-size: 1rem;
    line-height: 1.7;
}

.feature-wave {
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 100px;
    height: 100px;
    background: rgba(26, 54, 93, 0.05);
    border-radius: 50%;
}

/* Process Section */
.process-section {
    background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: var(--primary);
    opacity: 0.2;
}

.process-step {
    display: flex;
    align-items: center;
    margin-bottom: 4rem;
    position: relative;
}

.process-step:nth-child(odd) {
    flex-direction: row;
    justify-content: flex-start;
}

.process-step:nth-child(even) {
    flex-direction: row-reverse;
    justify-content: flex-start;
}

.step-number {
    font-size: 4rem;
    font-weight: 900;
    color: rgba(26, 54, 93, 0.1);
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.step-content {
    flex: 0 0 45%;
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    position: relative;
    z-index: 2;
}

.process-step:nth-child(odd) .step-content {
    margin-right: auto;
}

.process-step:nth-child(even) .step-content {
    margin-left: auto;
}

.step-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.step-title {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.step-description {
    color: var(--gray);
    margin: 0;
}

.step-connector {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 3px;
    background: var(--primary);
    opacity: 0.3;
    transform: translate(-50%, -50%);
}

/* Info Section */
.info-section {
    background: white;
}

.info-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 4rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--light-gray);
}

.info-header {
    text-align: center;
    margin-bottom: 3rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.info-details {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
}

.info-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.info-title i {
    color: var(--primary);
}

.info-list {
    list-style: none;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.info-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.info-icon {
    color: var(--primary);
    font-size: 1.2rem;
    margin-top: 0.25rem;
}

.info-item div {
    flex: 1;
    color: var(--dark-gray);
}

.info-note {
    background: linear-gradient(135deg, rgba(230, 57, 70, 0.1) 0%, rgba(217, 4, 41, 0.05) 100%);
    padding: 1.5rem 2rem;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 1rem;
    border-left: 4px solid var(--accent);
}

.info-note i {
    color: var(--accent);
    font-size: 1.5rem;
}

.info-note p {
    margin: 0;
    color: var(--dark);
}

/* CTA Section */
.cta-section {
    background: var(--primary-gradient);
    color: white;
    text-align: center;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,224L48,218.7C96,213,192,203,288,208C384,213,480,235,576,213.3C672,192,768,128,864,112C960,96,1056,128,1152,144C1248,160,1344,160,1392,160L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
    background-size: cover;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 3rem;
    color: white;
    margin-bottom: 1.5rem;
}

.cta-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
    border-radius: 50px;
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn-outline:hover {
    background: white;
    color: var(--primary);
}

/* Footer */
.site-footer {
    background: var(--primary-dark);
    color: white;
    padding-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    margin-right: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.footer-logo img {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.footer-company {
    font-size: 1.5rem;
    color: white;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    margin: 0;
}

.footer-about {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1.25rem;
    color: white;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
}

.footer-nav {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 0.75rem;
}

.footer-nav a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-nav a:hover {
    color: white;
    padding-left: 5px;
}

.footer-nav i {
    font-size: 0.8rem;
    color: var(--accent);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    color: var(--accent);
    margin-top: 0.25rem;
}

.contact-item span {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
}

.copyright strong {
    color: white;
}

.footer-extra p {
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-extra i {
    color: var(--accent);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}