:root {
    --bg-dark: #0f0f1a;         
    --text-primary: #f0f0f5;   
    --text-secondary: #a0a0b0; 
    --accent-magic: #9933ff;   
    --accent-magic-hover: #ad5cff;
    --particle-color: rgba(153, 51, 255, 0.7); 
    --line-color: rgba(153, 51, 255, 0.2);
    --accent-magic-dark: #4a00e0;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-dark); 
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden; 
    -webkit-font-smoothing: antialiased; 
    -moz-osx-font-smoothing: grayscale; 
    -webkit-user-select: none; -ms-user-select: none; user-select: none;   
    cursor: crosshair;
}
html { scroll-behavior: smooth; }
.container {
    width: 90%; max-width: 1100px; margin: 0 auto;
    position: relative; z-index: 2; 
}
h1, h2, h3, h4 { color: var(--text-primary); font-weight: 700; margin-bottom: 1rem; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; text-align: center; }
h3 { font-size: 1.4rem; color: var(--accent-magic-hover); }
h4 { font-size: 1.15rem; color: var(--text-primary); } 
p { color: var(--text-secondary); margin-bottom: 1rem; }
a { 
    color: var(--accent-magic); 
    text-decoration: none; 
    transition: color 0.3s ease; 
    cursor: pointer;
}
a:hover { color: var(--accent-magic-hover); }

#particle-background {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0; 
    background-color: var(--bg-dark); 
}

.main-header {
    background-color: rgba(15, 15, 26, 0.75); 
    backdrop-filter: blur(12px); 
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    position: sticky; top: 0; z-index: 100;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); 
}
.main-header .container { display: flex; justify-content: space-between; align-items: center; }

.logo-container {
    display: flex;
    align-items: center;
    gap: 0.75rem; 
    font-size: 1.5rem; 
    font-weight: 700; 
    color: var(--text-primary);
    text-decoration: none;
    -webkit-user-select: none; 
    -ms-user-select: none;     
    user-select: none;
    -webkit-user-drag: none;
}

.header-logo {
    height: 35px; 
    width: auto;
    transition: transform 0.3s ease;
    pointer-events: none; 
    -webkit-user-drag: none;
}
.logo-container:hover .header-logo {
    transform: rotate(15deg); 
}

.logo { 
    color: var(--text-primary); 
    transition: color 0.3s ease;
}
.logo-container:hover .logo { 
    color: var(--accent-magic); 
}

.main-nav ul { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; }
.main-nav li { margin-left: 1.5rem; margin-right: 1.5rem; } 
.main-nav a { font-weight: 700; font-size: 1rem; position: relative; padding-bottom: 5px; }
.main-nav a::after { content: ''; position: absolute; width: 0; height: 2px; bottom: 0; left: 0; background-color: var(--accent-magic); transition: width 0.3s ease-out; }
.main-nav a:hover::after { width: 100%; }

.hero {
    text-align: center; padding: 6rem 0; min-height: 400px;
    display: flex; align-items: center; justify-content: center;
    position: relative; z-index: 2;
}
.hero .subtitle { font-size: 1.2rem; color: var(--text-secondary); max-width: 600px; margin: 1rem auto 2rem; }
.typing-effect { color: var(--accent-magic); border-right: 3px solid var(--accent-magic); animation: blink 0.75s step-end infinite; padding-right: 4px; }
@keyframes blink { from, to { border-color: transparent; } 50% { border-color: var(--accent-magic); } }

.cta-button {
    background-color: var(--accent-magic);
    color: var(--text-primary);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
    box-shadow: 0 4px 20px rgba(153, 51, 255, 0.4);
    display: inline-block; 
    cursor: pointer;
}
.cta-button:hover {
    background-color: var(--accent-magic-hover);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 25px rgba(153, 51, 255, 0.5);
}

.content-section {
    padding: 5rem 0;
    position: relative;
    z-index: 2;
}
.section-intro { text-align: center; font-size: 1.1rem; max-width: 600px; margin: 0 auto 3rem; }

.service-card, .projet-card, .process-step-card {
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px); 
    padding: 2rem;
    border-radius: 16px; 
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25); 
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover, .projet-card:hover, .process-step-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 35px rgba(153, 51, 255, 0.3);
    border-color: rgba(153, 51, 255, 0.45);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.offre-card {
    display: flex;
    flex-direction: column;
}
.offre-description {
    font-style: italic;
    color: var(--text-secondary);
}
.offre-list {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
    flex-grow: 1;
}
.offre-list li {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}
.offre-list li::before {
    content: '✓';
    color: var(--accent-magic-hover);
    position: absolute;
    left: 0;
    font-weight: 700;
}
.offre-prix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-magic-hover);
    text-align: center;
    margin-top: 1.5rem;
    margin-bottom: 0;
}

.apropos .about-content { 
    display: flex; flex-wrap: wrap; align-items: center; gap: 3rem; 
    justify-content: center; 
}
.apropos .about-text { flex: 2; min-width: 300px; max-width: 600px; }
.apropos .about-image { 
    flex: 1; min-width: 250px; 
    display: flex; justify-content: center; align-items: center; 
}
.about-logo {
    width: 100%; 
    max-width: 280px; 
    height: auto;
    border-radius: 16px; 
    box-shadow: 0 4px 20px rgba(153, 51, 255, 0.4); 
    padding: 20px; 
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    pointer-events: none;
    -webkit-user-drag: none;
}


.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.process-step-card {
    padding-top: 3.5rem; position: relative; overflow: hidden; 
}
.step-number {
    position: absolute; top: -1.5rem; left: 1.5rem;
    font-size: 6rem; font-weight: 700;
    color: rgba(153, 51, 255, 0.1); 
    z-index: 1;
}
.process-step-card h3, .process-step-card p { position: relative; z-index: 2; }

.projets-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}
.projet-card {
    overflow: hidden; padding: 0; display: flex; flex-direction: column;
    width: 100%;
    max-width: 350px; 
}
@media (min-width: 768px) {
    .projet-card {
        max-width: 320px;
    }
}
.projet-image-placeholder {
    width: 100%; height: 220px; background-color: #333; 
    display: flex; align-items: center; justify-content: center; 
    font-style: italic; color: var(--text-secondary); font-size: 0.9rem;
}
.projet-image-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    -webkit-user-drag: none;
    pointer-events: none;
}
.projet-info {
    padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column;
}
.projet-info p { flex-grow: 1; margin-bottom: 1.5rem; }
.projet-link { font-weight: 700; margin-top: auto; display: inline-block; }
.projet-link:after { content: ' →'; transition: transform 0.3s ease; display: inline-block; }
.projet-link:hover:after { transform: translateX(5px); }

.skills-grid {
    display: flex; flex-wrap: wrap; justify-content: center; 
    gap: 1rem; max-width: 900px; margin: 0 auto;
}
.skill-item {
    background: rgba(29, 29, 43, 0.7); backdrop-filter: blur(8px); 
    padding: 0.8rem 1.5rem; border-radius: 20px; 
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-weight: 700; font-size: 0.9rem; transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.skill-item img {
    height: 24px;
    width: 24px;
    object-fit: contain;
    -webkit-user-drag: none;
    pointer-events: none;
}
.skill-item:hover {
    color: var(--accent-magic); transform: scale(1.05); 
    border-color: var(--accent-magic-hover); 
    box-shadow: 0 2px 10px rgba(153, 51, 255, 0.25);
}

.faq-accordion {
    max-width: 800px; 
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem; 
}
.faq-item {
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px); 
    border-radius: 16px; 
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25); 
    overflow: hidden; 
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.faq-item:hover {
    transform: translateY(-5px); 
    box-shadow: 0 8px 35px rgba(153, 51, 255, 0.3);
    border-color: rgba(153, 51, 255, 0.45);
}
.faq-question {
    background: none; border: none;
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
    font-weight: 700; font-size: 1.15rem; 
    padding: 1.5rem 2rem;
    width: 100%; text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-question span { color: var(--text-primary); }
.faq-icon {
    font-size: 1.5rem; font-weight: 700;
    color: var(--accent-magic-hover);
    transition: transform 0.3s ease;
    transform-origin: center;
}
.faq-answer {
    max-height: 0; 
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}
.faq-answer p {
    padding: 0 2rem 1.5rem 2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 1.5rem;
}
.faq-item.active .faq-answer {
    max-height: 300px; 
}
.faq-item.active .faq-icon {
    transform: rotate(45deg); 
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.testimonial-card { display: flex; flex-direction: column; }
.testimonial-card .quote {
    font-style: italic; color: var(--text-primary);
    font-size: 1.1rem; flex-grow: 1; margin-bottom: 1.5rem;
}
.testimonial-card .author {
    font-weight: 700; color: var(--accent-magic-hover);
    margin-bottom: 0; text-align: right;
}

.cta-banner {
    padding: 4rem;
    text-align: center;
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px); 
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25); 
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative; z-index: 2;
    margin: 4rem 0; 
    border-radius: 16px; 
}
.cta-banner:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 35px rgba(153, 51, 255, 0.3);
    border-color: rgba(153, 51, 255, 0.45);
}
.cta-banner h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    text-shadow: none;
}
.cta-banner p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    opacity: 1;
    max-width: 600px;
    margin: 1rem auto 2rem;
}
.cta-banner .cta-button {
    background-color: var(--accent-magic);
    color: var(--text-primary);
    box-shadow: 0 4px 20px rgba(153, 51, 255, 0.4);
}
.cta-banner .cta-button:hover {
    background-color: var(--accent-magic-hover);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05);
}

.contact-form {
    max-width: 800px;
    margin: 2rem auto 0;
    text-align: left;
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}
@media (min-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}
.form-group {
    margin-bottom: 1.5rem;
}
.form-group label {
    display: block;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: 0.9rem 1.2rem;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    color: var(--text-primary);
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px); 
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px; 
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-magic-hover);
    box-shadow: 0 0 15px rgba(153, 51, 255, 0.3);
}
.contact-form textarea {
    resize: vertical; 
}

.contact-form input[type="file"] {
    width: 100%;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: rgba(29, 29, 43, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 0.5rem;
    cursor: pointer;
}
.contact-form input[type="file"]::file-selector-button {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
    background-color: var(--accent-magic);
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1rem;
    margin-right: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.contact-form input[type="file"]::file-selector-button:hover {
    background-color: var(--accent-magic-hover);
}


.form-submit {
    text-align: center;
    margin-top: 1rem;
}
.form-submit button {
    cursor: pointer;
    border: none;
}
.form-submit button:disabled {
    background-color: #555;
    color: #999;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.form-message {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    font-weight: 700;
    text-align: center;
    display: none; 
}
.form-message.success {
    background-color: rgba(50, 205, 50, 0.2); 
    border: 1px solid rgba(50, 205, 50, 0.8);
    color: #90ee90; 
}
.form-message.error {
    background-color: rgba(255, 69, 0, 0.2); 
    border: 1px solid rgba(255, 69, 0, 0.8);
    color: #ff7f7f; 
}

.main-footer {
    text-align: center; padding: 2rem 0; 
    background-color: transparent; 
    border-top: 1px solid rgba(255, 255, 255, 0.15); 
    color: var(--text-secondary); font-size: 0.9rem; 
    position: relative; z-index: 2;
}

.content-section {
    opacity: 0; transform: translateY(20px); 
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.content-section.is-visible {
    opacity: 1; transform: translateY(0);
}

.error-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 2rem;
}
.error-box {
    background: rgba(29, 29, 43, 0.7); 
    backdrop-filter: blur(10px); 
    padding: 3rem 4rem;
    border-radius: 16px; 
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25); 
}
.error-box h1 {
    font-size: 5rem;
    color: var(--accent-magic-hover);
    margin: 0;
}
.error-box h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-top: 0.5rem;
    margin-bottom: 1.5rem;
}
.error-box p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WRhyzbi.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459W1hyzbi.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WZhyzbi.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459Wdhyzbi.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459Wlhyw.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* cyrillic-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WRhyzbi.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459W1hyzbi.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
/* vietnamese */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WZhyzbi.woff2) format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB;
}
/* latin-ext */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459Wdhyzbi.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459Wlhyw.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}