:root{
  --bg: #f6f8f7;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --brand-50:  #eef7f0;
  --brand-100: #dbeee0;
  --brand-200: #c7e4d1;
  --brand-300: #b2c8b7; 
  --brand-400: #8fb19a;
  --brand-500: #52855e; 
  --brand-600: #395748; 
  --ring: rgba(82,133,94,.35);
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.07);
  --shadow-md: 0 8px 30px rgba(0,0,0,.08);
  --header-height: 64px;
}
.darkmode{
  --bg: #253630;
  --surface: #46645a;
  --text: #f3f4f6;
  --muted: #9ca3af;
  --brand-50:  #1d2b21;
  --brand-100: #233629;
  --brand-200: #294233;
  --brand-300: #31503f;
  --brand-400: #3d6450;
  --brand-500: #52855e;
  --brand-600: #6fa981;
  --ring: rgba(82,133,94,.45);
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.4);
  --shadow-md: 0 8px 30px rgba(0,0,0,.55);
  --header-height: 64px;

}

html, body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

body { padding-top: var(--header-height); }

img { max-width: 100%; height: auto; display: block; }


.nav{
  position: fixed; 
  inset: 0 0 auto 0; 
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  gap: 24px;

  background: #46645a;
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid rgba(0,0,0,.06);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.nav h2{
  margin: 0;
  font-size: 1.2rem;
  color: var(--brand-600);
  letter-spacing: .3px;
}

#btn{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a,
#submite,
button,#linkedin{
  max-width: 200px;
  border: 1px solid transparent;
  padding: .55rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  background: var(--brand-600);
  color: #fff;
  transition: transform .06s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  box-shadow: 0 1px 0 rgba(0,0,0,.04);
}

.nav a:hover,
button:hover,
#submite:hover,#linkedin:hover{
  background: var(--brand-500);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}


section{ padding: 24px 20px; }

h1, h2, h3{
  color: var(--brand-600);
  line-height: 1.25;
  margin: .2rem 0 .6rem;
}
h1{ font-size: clamp(1.6rem, 1.1rem + 1.5vw, 2.2rem); }
h2{ font-size: clamp(1.2rem, 1rem + .6vw, 1.5rem); }
h3{ font-size: 1.05rem; }

p{ color: var(--text); }

#about_me{
  display: grid;
  grid-template-columns: minmax(140px,200px) 1fr;
  grid-template-areas:
    "title title"
    "photo text";
  gap: 1.25rem;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}

#about_me h1{
  grid-area: title;
  text-align: center;          
  margin: 0 0 .5rem;
}

#about_me img{
  grid-area: photo;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: 0 1px 3px rgba(0,0,0,.07);
  background: #fff;
}

#about_me p{
  grid-area: text;
  margin: 0;                   
  color: var(--text);
}

.card, .card2{
  background: var(--surface);
  border: 1px solid rgba(0,0,0,.06);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 2rem auto;
  max-width: 1100px;
  box-shadow: var(--shadow-sm);
}

.fillter_btn{
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.box-row{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.box{
  padding: 1rem;
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-sm);
  background: var(--brand-50);
  display: grid;
  place-items: center;
  text-align: center;
  gap: .6rem;
  transition: transform .12s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}

.box img{ height: auto; }

.box:hover{
  transform: translateY(-3px);
  background: var(--brand-100);
  border-color: var(--brand-300);
  box-shadow: var(--shadow-md);
}


.b1, .b2, .b3{
  background: var(--brand-300);
  border-color: var(--brand-600);
}
.b1:hover, .b2:hover, .b3:hover{
  background: var(--brand-500);
  color: #fff;
}

.card2{
  display: grid;
  gap: .8rem;
}

.card2 label{
  font-weight: 600;
  color: var(--brand-600);
}

.card2 input,
.card2 textarea{
  width: 100%;
  padding: .7rem .8rem;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  background: #fff;
  color: #253630;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.card2 input::placeholder,
.card2 textarea::placeholder{ color: #9ca3af; }

.card2 input:focus,
.card2 textarea:focus{
  border-color: var(--brand-400);
  box-shadow: 0 0 0 4px var(--ring);
}

#message_block{ margin-top: .4rem; }

#submite{
  justify-self: start;
  background: var(--brand-600);
  border-color: rgba(0,0,0,.04);
}

.b4{
  background: linear-gradient(180deg, var(--brand-100), var(--brand-50));
  border-color: var(--brand-300);
  text-align: left;
}
.b4 h2{ margin-top: 0; }
#fact{ margin-top: 10px; color: var(--brand-600) !important; }


.hide{ display: none !important; }


div > p, h2 { color: inherit; }
.fillter_btn2 {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 1rem;
}
.box-row2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.box2 {
  background: #fef9f9;
  border: 2px solid #b2c8b7;
  border-radius: 12px;
  padding: 0.75rem;
  text-align: center;
  transition: all 0.25s ease;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.box2:hover {
  background: #dbeee0;
  transform: translateY(-3px);
}

.box2 h5 {
  color: #395748;
  font-size: 1rem;
}
#show1:hover,#show2:hover,#show3:hover{
background: #dbeee0;
color: #395748;
}
#them{
  display: flex;
  align-items: center;
  justify-content: center;
}
#them-btn svg:last-child{
  display:none;
}
.darkmode #them-btn svg:first-child{
  display:none;
}
.darkmode #them-btn svg:last-child{
  display:block;
}