/* ============================================================
   DESIGN SYSTEM — Grégoire Puget Portfolio
   Variables, reset, typographie, boutons, utilitaires
   ============================================================ */

:root{
  --navy:    #1A2E45;
  --cyan:    #0a7ae8;
  --cyan2:   #0860c0;
  --cyan3:   #064ea0;
  --hero1:   #0a7ae8;
  --hero2:   #1a9ad4;
  --cyanlt:  #daeeff;
  --cyanmed: #a8d4f8;
  --white:   #FFFFFF;
  --off:     #F5F8FB;
  --gray:    #6B7E93;
  --light:   #E8EEF4;
  --dark:    #1E2D3D;
  --hero-bg: #F0F2F5;
  --green:   #27AE60;
  --greenlt: #EAF8EF;
  --r:       8px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Montserrat',sans-serif;
  color:var(--dark);
  background:var(--white);
  line-height:1.7;
}

/* ── Animations */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px);}to{opacity:1;transform:translateY(0);}}
.fade-up{animation:fadeUp .7s ease both;}
.fade-up-2{animation:fadeUp .7s .15s ease both;}
.fade-up-3{animation:fadeUp .7s .3s ease both;}

/* ── Section utilities */
section{padding:90px 5%;}
.section-inner{max-width:1200px;margin:0 auto;}
.section-tag{
  display:inline-block;
  color:var(--cyan);font-size:12px;font-weight:700;
  letter-spacing:2px;text-transform:uppercase;
  margin-bottom:14px;
}
.section-title{
  font-family:'Montserrat',sans-serif;
  font-size:clamp(28px,3.5vw,42px);
  color:var(--navy);line-height:1.2;
  margin-bottom:16px;
}
.section-sub{font-size:15px;color:var(--gray);max-width:580px;line-height:1.8;}
.section-title-group{margin-bottom:52px;}

/* Divider index.html */
.divider-dots{display:flex;align-items:center;gap:6px;margin-top:16px;}
.divider-dots span:nth-child(1){width:40px;height:3px;border-radius:2px;background:var(--cyan);display:block;}
.divider-dots span:nth-child(2){width:16px;height:3px;border-radius:2px;background:var(--cyan);display:block;}
.divider-dots span:nth-child(3){width:8px;height:3px;border-radius:2px;background:var(--cyanlt);display:block;}

/* Divider project pages */
.divider{display:flex;align-items:center;gap:6px;margin-bottom:52px;}
.divider span:nth-child(1){width:40px;height:3px;border-radius:2px;background:var(--cyan);display:block;}
.divider span:nth-child(2){width:16px;height:3px;border-radius:2px;background:var(--cyan);display:block;}
.divider span:nth-child(3){width:8px;height:3px;border-radius:2px;background:var(--cyanlt);display:block;}

/* ── Buttons */
.btn-primary{
  background:var(--cyan);color:var(--white);
  padding:13px 30px;border-radius:var(--r);
  font-size:15px;font-weight:600;text-decoration:none;
  transition:background .2s,transform .15s;
  display:inline-block;
}
.btn-primary:hover{background:var(--cyan2);transform:translateY(-2px);}

.btn-outline{
  border:1.5px solid var(--light);
  color:var(--navy);background:var(--white);
  padding:12px 30px;border-radius:var(--r);
  font-size:15px;font-weight:500;text-decoration:none;
  transition:border-color .2s,background .2s,color .2s;
  display:inline-block;
}
.btn-outline:hover{border-color:var(--hero1);color:var(--hero1);}

.btn-submit{
  width:100%;
  background:var(--cyan);color:var(--white);
  border:none;padding:14px;border-radius:var(--r);
  font-size:15px;font-weight:600;cursor:pointer;
  font-family:'Montserrat',sans-serif;
  transition:background .2s,transform .15s;
}
.btn-submit:hover{background:var(--cyan2);transform:translateY(-1px);}
.btn-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;}

/* ── Form feedback ── */
.form-feedback{display:none;padding:12px 16px;border-radius:var(--r);font-size:13px;font-weight:600;margin-top:14px;}
.form-feedback:not(:empty){display:block;}
.form-feedback--ok{background:#EAF8EF;color:#1E7A40;border:1px solid #B2E8C4;}
.form-feedback--error{background:#FEEEEE;color:#C62828;border:1px solid #FFCDD2;}

/* ── Form shared */
.form-row{margin-bottom:18px;}
.form-row label{font-size:12px;font-weight:600;letter-spacing:1px;text-transform:uppercase;display:block;margin-bottom:8px;}
.form-row input,.form-row textarea{
  width:100%;border-radius:var(--r);
  padding:12px 16px;font-size:14px;font-family:'Montserrat',sans-serif;
  transition:border-color .2s;outline:none;
}
.form-row textarea{resize:vertical;min-height:110px;}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}

@media(max-width:600px){.form-grid{grid-template-columns:1fr;}}