/* theme variables */
:root {
    /* Turquoise palette*/
  --bg: #023a43;          /* dark turquoise background */
  --panel: rgba(255,255,255,0.06); /* translucent white card */
  --panel-strong: rgba(255,255,255,0.10);
  --border: rgba(255,255,255,0.14);

    /* Accents */
  --accent: #28d7c5;      /* bright turquoise for buttons/links */
  --accent-2: #0fae9e;    /* deeper turquoise for hovers */
  --accent-soft: rgba(40,215,197,0.18); /* soft highlight */
  --accent-text: #042222;

  /* Text */
  --text: #ffffff;
  --muted: rgba(255,255,255,0.72);

  /* Radius scale */
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-pill: 999px;

}

/* Base */
* {box-sizing: border-box; }

body{
    margin: 0;
    font-family: 'Montserrat', system-ui, sans-serif;
    line-height: 1.4;
    background: var(--bg);
    color: var(--text);
}

main{
    max-width: 900px;
    margin: 0 auto;
    padding: 24px 16px 48px;
}

/* Header */
header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

h1 {
    margin: 0;
    font-size: 32px;
}

#reset-button{
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    
}

#reset-button:hover{
    border-color: var(--panel-strong);


}

/* Form card */

#plan-form{
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: grid;
    gap: 12px;
    margin-bottom: 18px;
}

#plan-form label{
    font-size: 14px;
    color: var(--muted);
}

#plan-form select,
#plan-form input[type="date"]{
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--panel);
    color: inherit;
}

#generate-button{
    justify-self: start;
    border: 0;
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-weight: 600;
    cursor: pointer;
    background: var(--accent);
    color: var(--accent-text);

}

#generate-button:hover{
  background: var(--accent-2);
}


#plan-output {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    min-height: 60px;
}

#plan-output h2{
    margin: 0 0 6px;
    font-size: 20px;
}

#plan-output h3{
    margin: 0 0 14px;
    font-size: 14px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* run list*/

.run-list{
    display: grid;
    gap: 10px;
}

.run-item{
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr 180px auto;
    gap: 10px;
    align-items: center;
}

.run-item p{
    margin:0;
}

.run-item select{
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--panel);
    color: inherit;
}

.adjusted-badge{
    background: var(--accent-soft);
    border: 1px solid rgba(40,215,197,0.35);
    color: var(--text);
    font-size: 12px;
    font-weight: 700;
    padding: 6px 10px;
    border-radius: var(--radius-pill);
}

/*focus states*/

select:focus,
input[type="date"]:focus,
button:focus{
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* responsive */

@media (max-width: 640px){
  .run-item{
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  #generate-button{
    width: 100%;
    justify-self: stretch;
  }
}