/* assets/css/bureau.css */

/* ========================================= */
/* PAGE BUREAU D'ÉTUDE                       */
/* ========================================= */

/* Section Intro (Mission) */
.mission-section {
    padding: 80px 20px;
    background-color: white;
    text-align: center;
}
.mission-container {
    max-width: 900px;
    margin: 0 auto;
}
.mission-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    color: var(--navy);
    margin-bottom: 25px;
    text-transform: none;
}
.mission-text {
    font-family: 'Manrope', sans-serif;
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
}

/* NOUVEAU : Les 3 Piliers (Pourquoi une étude ?) */
.pillars-section {
    padding: 60px 20px 80px 20px;
    background-color: white;
}
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}
.pillar-item {
    text-align: center;
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 8px;
    background: #fdfdfd;
    transition: 0.3s;
}
.pillar-item:hover {
    border-color: var(--blue);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}
.pillar-number {
    display: inline-block;
    font-family: 'Oswald', sans-serif;
    font-size: 3rem;
    color: #e2e8f0;
    font-weight: 700;
    margin-bottom: 10px;
}
.pillar-title {
    font-family: 'Syne', sans-serif;
    font-size: 1.2rem;
    color: var(--navy);
    font-weight: 700;
    margin-bottom: 15px;
    text-transform: uppercase;
}
.pillar-desc {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
}

/* Grille des Compétences Techniques (Existante) */
.expertise-grid-section {
    padding: 80px 20px;
    background-color: #f8fafc;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1300px;
    margin: 0 auto;
}

.expertise-card {
    background: white;
    padding: 40px 30px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    transition: 0.3s;
    position: relative;
    overflow: hidden;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    background-color: var(--blue);
    opacity: 0;
    transition: 0.3s;
}

.expertise-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
}
.expertise-card:hover::before { opacity: 1; }

.exp-icon {
    font-size: 2.5rem;
    color: var(--navy);
    margin-bottom: 25px;
}

.exp-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--navy);
}

.exp-desc {
    font-family: 'Manrope', sans-serif;
    font-size: 0.95rem;
    color: #64748b;
    line-height: 1.6;
}

/* NOUVEAU : Focus Technique (Normes) */
.tech-focus-section {
    padding: 80px 20px;
    background: var(--navy);
    color: white;
    text-align: center;
}
.tech-focus-container { max-width: 1000px; margin: 0 auto; }
.tf-title {
    font-family: 'Oswald', sans-serif;
    font-size: 2.2rem;
    margin-bottom: 40px;
}
.tf-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}
.tf-item { text-align: center; max-width: 250px; }
.tf-icon {
    font-size: 2rem;
    color: var(--blue);
    margin-bottom: 20px;
    border: 2px solid rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 50%;
}
.tf-label {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    margin-bottom: 10px;
    display: block;
    font-size: 1.1rem;
}
.tf-text { font-size: 0.9rem; color: #aaa; line-height: 1.5; }


/* Section Process (Étendu) */
.process-section {
    padding: 100px 20px;
    background: white;
}
.process-intro { text-align: center; max-width: 800px; margin: 0 auto 60px auto; }

.process-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 80px;
    max-width: 1100px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    align-items: center;
    gap: 50px;
}
.process-step.reverse { flex-direction: row-reverse; }

.step-info { flex: 1; }
.step-visual { flex: 1; }
.step-visual img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.step-number {
    font-family: 'Oswald', sans-serif;
    font-size: 4rem;
    color: #f0f2f5;
    font-weight: 700;
    line-height: 1;
    margin-bottom: -20px;
    display: block;
    position: relative;
    z-index: -1;
}
.step-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.8rem;
    color: var(--navy);
    margin-bottom: 15px;
}
.step-desc { font-size: 1rem; color: #555; line-height: 1.7; }


/* Section Logiciels / Outils */
.tools-strip {
    background: #f8fafc;
    padding: 60px 20px;
    text-align: center;
    border-top: 1px solid #eee;
}
.tools-title {
    color: var(--navy);
    font-family: 'Syne', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 2px;
}
.tools-list {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}
.tool-item {
    color: #888;
    font-family: 'Oswald', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Mobile */
@media (max-width: 1024px) {
    .expertise-grid, .pillars-grid { grid-template-columns: 1fr; }
    .process-step, .process-step.reverse { flex-direction: column; gap: 30px; }
    .tf-grid { flex-direction: column; align-items: center; }
}