/*
 * Parsight Brand Stylesheet - Dark Theme
 * Consulting en gestion & solutions technologiques
 * Minimalist, premium, analytical, calm, structured
 */

:root {
    /* Dark Theme Colors */
    --color-bg: #0a0a0c;
    --color-bg-elevated: #111114;
    --color-bg-card: #16161a;
    --color-bg-hover: #1c1c21;

    --color-white: #ffffff;
    --color-text: #e4e4e7;
    --color-text-muted: #a1a1aa;
    --color-text-subtle: #71717a;

    --color-border: #27272a;
    --color-border-light: #3f3f46;

    /* Accent - Deep Blue */
    --color-accent: #3b82f6;
    --color-accent-hover: #60a5fa;
    --color-accent-subtle: rgba(59, 130, 246, 0.15);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --section-padding: 120px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-regular);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.2;
    color: var(--color-white);
}

.text-accent {
    color: var(--color-accent);
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-accent) 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    background: transparent;
    padding: 20px 0;
    transition: all var(--transition-medium);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 12, 0.95);
    backdrop-filter: blur(12px);
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
}

.navbar-brand {
    display: flex;
    align-items: center;
    margin-left: -12px;
}

.navbar-brand img {
    height: 68px;
    width: auto;
}

.navbar-nav {
    gap: 4px;
}

.nav-link {
    color: var(--color-text-muted) !important;
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    padding: 10px 16px !important;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-white) !important;
    background: var(--color-bg-hover);
}

.navbar-toggler {
    border: 1px solid var(--color-border);
    padding: 8px 12px;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Buttons */
.btn {
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    padding: 12px 24px;
    border-radius: 8px;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-1px);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-outline-light:hover {
    background: var(--color-bg-hover);
    color: var(--color-white);
    border-color: var(--color-text-subtle);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

/* Section Headers */
.section-eyebrow {
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    line-height: 1.7;
}

.section-header {
    margin-bottom: 64px;
}

/* Hero Section */
.hero {
    padding-top: 100px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.15), transparent);
    pointer-events: none;
}

.hero-eyebrow {
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--color-accent);
}

.hero-title {
    font-size: 4rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.05;
    color: var(--color-white);
    margin-bottom: 28px;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 560px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Hero Visual */
.hero-visual {
    position: relative;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.hero-stat {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 24px;
    transition: all var(--transition-medium);
}

.hero-stat:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
}

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: 4px;
}

.hero-stat-label {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
}

/* Services Section */
.services {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 36px;
    height: 100%;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), #8b5cf6);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.service-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent-subtle);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon i {
    font-size: 1.25rem;
    color: var(--color-accent);
}

.service-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: 12px;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-list li {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
    padding: 8px 0;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.service-list li:first-child {
    border-top: none;
}

.service-list li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* Value Props Section */
.value-props {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.value-card {
    text-align: center;
    padding: 32px 24px;
}

.value-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    margin-bottom: 12px;
}

.value-title {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: 8px;
}

.value-desc {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
}

/* Solutions Section */
.solutions {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.solution-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px;
    height: 100%;
    transition: all var(--transition-medium);
}

.solution-card:hover {
    border-color: var(--color-border-light);
}

.solution-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(59, 130, 246, 0.05) 100%);
}

.solution-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 6px 12px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.solution-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: 12px;
}

.solution-desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
}

.solution-features {
    list-style: none;
    padding: 0;
    margin: 0 0 28px 0;
}

.solution-features li {
    font-size: 0.9375rem;
    color: var(--color-text);
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--color-border);
}

.solution-features li:last-child {
    border-bottom: none;
}

.solution-features i {
    color: var(--color-accent);
}

/* Approach Section */
.approach {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.approach-text {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
    line-height: 1.8;
}

.approach-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.approach-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all var(--transition-medium);
}

.approach-step:hover {
    border-color: var(--color-border-light);
}

.step-number {
    width: 44px;
    height: 44px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1rem;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.0625rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: 6px;
}

.step-content p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.about-text {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 48px;
}

.about-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
}

/* Contact Section */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.contact-text {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 1rem;
    color: var(--color-text);
}

.contact-item i {
    font-size: 1.25rem;
    color: var(--color-accent);
    width: 24px;
}

.contact-item a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--color-accent);
}

/* Contact Form */
.contact-form {
    background: var(--color-bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--color-border);
}

.form-control {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 14px 16px;
    font-size: 0.9375rem;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.form-control:focus {
    background: var(--color-bg);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
    outline: none;
    color: var(--color-white);
}

.form-control::placeholder {
    color: var(--color-text-subtle);
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-brand-img {
    display: block;
    height: 32px;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.9375rem;
    color: var(--color-text-subtle);
    line-height: 1.6;
    max-width: 280px;
}

.footer-title {
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--color-text-subtle);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-white);
}

.footer-bottom {
    margin-top: 60px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-subtle);
    margin: 0;
}

/* Responsive */
@media (max-width: 991px) {
    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.25rem;
    }

    .navbar-collapse {
        background: var(--color-bg-card);
        padding: 24px;
        margin-top: 16px;
        border-radius: 12px;
        border: 1px solid var(--color-border);
    }

    .navbar-nav {
        gap: 0;
    }

    .nav-link {
        padding: 12px 0 !important;
    }

    .navbar .btn {
        margin-top: 16px;
        width: 100%;
    }

    .about-stats {
        gap: 40px;
    }

    .hero-stats {
        margin-top: 48px;
    }
}

@media (max-width: 767px) {
    :root {
        --section-padding: 80px;
    }

    .hero {
        padding-top: 80px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-eyebrow::before {
        display: none;
    }

    .section-title {
        font-size: 1.875rem;
    }

    .solution-card {
        padding: 28px;
    }

    .contact-form {
        padding: 28px;
    }

    .approach-step {
        flex-direction: column;
        gap: 16px;
    }

    .about-stats {
        flex-direction: column;
        gap: 32px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .value-card {
        padding: 24px 16px;
    }
}