/* SilkLogic.ai Brand Variables */
:root {
    --purple-accent: #7D3CE0;
    --gradient-blue-start: #007BFF;
    --gradient-blue-end: #00CFFF;
    --aqua-highlight: #00D4FF;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --text-dark: #2d3748;
    --text-light: #718096;
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.16);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --transition: 0.3s ease;
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--white);
    color: var(--text-dark);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-blue-end) 100%);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
}

.hero-logo {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.hero-logo:hover {
    transform: scale(1.05);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--white);
    font-weight: 500;
}

.feature-item i {
    font-size: 1.25rem;
    color: var(--aqua-highlight);
}

/* 3D Cube Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    position: relative;
}

.cube-container {
    position: relative;
    width: 200px;
    height: 200px;
    transform-style: preserve-3d;
    animation: float 6s ease-in-out infinite;
}

.cube {
    position: absolute;
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, var(--purple-accent), var(--aqua-highlight));
    border-radius: 12px;
    animation: rotate 8s linear infinite;
}

.cube-1 {
    top: 0;
    left: 0;
    animation-delay: 0s;
    opacity: 0.9;
}

.cube-2 {
    top: 50px;
    right: 0;
    animation-delay: -2s;
    opacity: 0.7;
    transform: scale(0.8);
}

.cube-3 {
    bottom: 0;
    left: 50px;
    animation-delay: -4s;
    opacity: 0.8;
    transform: scale(1.1);
}

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

@keyframes rotate {
    0% { transform: rotateX(0deg) rotateY(0deg); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

/* Main Content */
.main-content {
    background-color: var(--white);
    position: relative;
}

/* Audit Card */
.audit-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    margin-bottom: 2rem;
}

.audit-card-header {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--medium-gray);
}

.audit-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.audit-title i {
    color: var(--purple-accent);
}

.audit-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin: 0;
}

.audit-card-body {
    padding: 2rem;
}

/* Form Sections */
.card {
    background: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-medium);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--medium-gray);
    padding: 1rem 1.5rem;
}

.card-header h5 {
    color: var(--text-dark);
    font-weight: 600;
    margin: 0;
}

.card-header h5 i {
    color: var(--purple-accent);
}

.card-body {
    padding: 1.5rem;
}

/* Form Controls */
.form-control, .form-select {
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--white);
    color: var(--text-dark);
}

.form-control:focus, .form-select:focus {
    border-color: var(--aqua-highlight);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
    outline: none;
    background-color: var(--white);
}

.form-select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%237D3CE0' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 2.5rem;
}

.form-select:hover {
    border-color: var(--purple-accent);
    box-shadow: 0 2px 8px rgba(125, 60, 224, 0.1);
}

.form-select option {
    background-color: var(--white);
    color: var(--text-dark);
    padding: 0.5rem;
}

.form-select option:hover {
    background-color: var(--light-gray);
}

.form-select option:checked {
    background-color: var(--purple-accent);
    color: var(--white);
}

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-check-input:checked {
    background-color: var(--purple-accent);
    border-color: var(--purple-accent);
}

.form-range::-webkit-slider-thumb {
    background: var(--aqua-highlight);
}

.form-range::-moz-range-thumb {
    background: var(--aqua-highlight);
    border: none;
}

/* Buttons */
.btn-gradient {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-blue-end) 100%);
    border: none;
    color: var(--white);
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    filter: brightness(1.1);
    color: var(--white);
}

.btn-gradient.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--purple-accent);
    color: var(--purple-accent);
    padding: 0.875rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-outline:hover {
    background: var(--purple-accent);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Results Section */
.results-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    height: 100%;
    transition: var(--transition);
}

.results-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.results-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    border-bottom: 1px solid var(--medium-gray);
}

.results-header-with-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.results-logo {
    height: 24px;
    width: auto;
    opacity: 0.8;
}

.results-header.purple-header {
    background: linear-gradient(135deg, var(--purple-accent) 0%, #a855f7 100%);
    color: var(--white);
}

.results-header.blue-header {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-blue-end) 100%);
    color: var(--white);
}

.results-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.results-body {
    padding: 1.5rem;
}

/* Circular Gauges */
.score-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.score-gauge {
    width: 150px;
    height: 150px;
    position: relative;
}

.gauge-circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(var(--purple-accent) 0deg, var(--medium-gray) 0deg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.gauge-circle::before {
    content: '';
    position: absolute;
    width: 80%;
    height: 80%;
    background: var(--white);
    border-radius: 50%;
}

.gauge-text {
    position: relative;
    z-index: 2;
    text-align: center;
}

.gauge-score {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.gauge-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
}

.purple-gauge .gauge-circle {
    background: conic-gradient(var(--purple-accent) 0deg, var(--medium-gray) 0deg);
}

.aqua-gauge .gauge-circle {
    background: conic-gradient(var(--aqua-highlight) 0deg, var(--medium-gray) 0deg);
}

/* Recommendations List */
.recommendation-item, .quick-win-item, .roadmap-item {
    background: var(--light-gray);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    border-left: 4px solid var(--purple-accent);
    transition: var(--transition);
}

.recommendation-item:hover, .quick-win-item:hover, .roadmap-item:hover {
    background: var(--medium-gray);
    transform: translateX(4px);
}

.quick-win-item {
    border-left-color: var(--purple-accent);
}

.roadmap-item {
    border-left-color: var(--aqua-highlight);
}

.recommendation-item i, .quick-win-item i, .roadmap-item i {
    color: var(--purple-accent);
    margin-right: 0.5rem;
}

/* Loading State */
.loading-container {
    text-align: center;
    padding: 3rem;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--medium-gray);
    border-top: 4px solid var(--aqua-highlight);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

.loading-text {
    font-size: 1.1rem;
    color: var(--text-light);
    margin: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Error State */
.error-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    padding: 3rem;
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.error-icon {
    font-size: 3rem;
    color: #dc3545;
    margin-bottom: 1rem;
}

.error-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.error-message {
    color: var(--text-light);
    margin-bottom: 2rem;
}

/* Footer */
.footer {
    background: var(--white);
    border-top: 1px solid var(--medium-gray);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

.footer-logo:hover {
    transform: scale(1.05);
}

.footer-text {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--purple-accent);
}

/* Action Buttons */
.action-buttons {
    margin: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-features {
        margin-top: 2rem;
    }
    
    .hero-logo {
        height: 50px;
    }
    
    .audit-card-header {
        padding: 1.5rem;
    }
    
    .audit-title {
        font-size: 1.5rem;
    }
    
    .audit-card-body {
        padding: 1.5rem;
    }
    
    .cube-container {
        width: 150px;
        height: 150px;
    }
    
    .cube {
        width: 60px;
        height: 60px;
    }
    
    .footer-brand {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        margin-bottom: 1rem;
    }
    
    .footer-logo {
        height: 32px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .results-logo {
        height: 20px;
    }
}

@media (max-width: 576px) {
    .hero-section {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .hero-logo {
        height: 40px;
    }
    
    .btn-gradient, .btn-outline {
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .score-gauge {
        width: 120px;
        height: 120px;
    }
    
    .gauge-score {
        font-size: 2rem;
    }
    
    .footer-logo {
        height: 28px;
    }
    
    .results-logo {
        height: 18px;
    }
}

@media (min-width: 1200px) {
    .hero-logo {
        height: 80px;
    }
    
    .footer-logo {
        height: 48px;
    }
}

/* Smooth scroll and fade animations */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}