/* ------------------------------------------------------
   Kleurenpalet – M&H Wearable
------------------------------------------------------ */
:root {
    --bg-light: #F7EBEC;
    --accent-light: #DDBDD5;
    --accent-mid: #AC9FBB;
    --grey-blue: #59656F;
    --deep-dark: #1D1E2C;

    --white: #ffffff;
}

/* 🔥 Belangrijk: voorkomt layout bugs */
* {
    box-sizing: border-box;
}

/* ------------------------------------------------------
   Algemene pagina
------------------------------------------------------ */
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: var(--bg-light);
    color: var(--grey-blue);
}

/* ------------------------------------------------------
   Header
------------------------------------------------------ */
header {
    background: var(--deep-dark);
    color: var(--white);
    padding: 25px 0;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.35);
}

header h1 {
    margin: 0;
    font-size: 32px;
    letter-spacing: 1px;
}

/* ------------------------------------------------------
   Navigatie tabs
------------------------------------------------------ */
nav ul {
    list-style: none;
    padding: 0;
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 35px;
}

nav ul li {
    background: #AC9FBB;
    padding: 10px 18px;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: 0.25s;
    border: 2px solid #8f82a6;
}

nav ul li:hover {
    background: #896fa4;
    transform: translateY(-3px);
}

nav ul li.active {
    background: #896fa4;
    transform: translateY(-5px);
}

/* ------------------------------------------------------
   Tabs content
------------------------------------------------------ */
.tabcontent {
    display: none;
    padding: 30px;
}

.tabcontent.visible {
    display: block;
}

/* ------------------------------------------------------
   Login & Register
------------------------------------------------------ */
.login-container {
    width: 100%;
    max-width: 400px;
    margin: 40px auto;
    padding: 15px;
    text-align: center;
}

.login-container h2 {
    color: var(--deep-dark);
    font-size: 26px;
    margin-bottom: 15px;
}

.login-box {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 0 12px rgba(0,0,0,0.1);
    border-left: 4px solid var(--accent-mid);
    width: 100%;
}

/* Inputvelden */
.login-box input {
    width: 100%;
    padding: 12px;
    margin: 8px 0 15px 0;
    border-radius: 6px;
    border: 1px solid var(--accent-mid);
    font-size: 16px;
    background: var(--white);
    transition: 0.2s;
}

.login-box input:focus {
    border-color: var(--grey-blue);
    background: var(--bg-light);
}

/* Buttons */
.login-box button,
.login-container button {
    width: 100%;
    padding: 12px;
    background-color: var(--grey-blue);
    border: none;
    border-radius: 6px;
    color: var(--white);
    font-weight: bold;
    cursor: pointer;
    font-size: 16px;
    transition: 0.2s;
    margin-top: 5px;
}

.login-box button:hover {
    background-color: var(--accent-mid);
    color: var(--deep-dark);
}

/* Links */
.login-container a {
    color: var(--deep-dark);
    text-decoration: none;
}

.login-container a:hover {
    text-decoration: underline;
}

/* ------------------------------------------------------
   Sensor Cards
------------------------------------------------------ */
.sensor-card {
    background: var(--white);
    padding: 20px;
    margin: 15px 0;
    border-radius: 12px;
    border-left: 6px solid var(--accent-mid);
    box-shadow: 0 0 10px rgba(0,0,0,0.12);
}

.sensor-card h3 {
    margin-bottom: 10px;
    color: var(--deep-dark);
}

.sensor-card p {
    font-size: 2em;
    font-weight: bold;
    color: var(--grey-blue);
}

/* ------------------------------------------------------
   Info Blocks
------------------------------------------------------ */
.info-box {
    width: 100%;
    max-width: 700px;
    margin: 25px auto;
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 0 12px rgba(0,0,0,0.1);
    border-left: 5px solid var(--accent-mid);
}

.info-box h3 {
    color: var(--deep-dark);
}

/* Images */
img {
    border-radius: 10px;
    max-width: 100%;
}

/* ------------------------------------------------------
   Grafieken
------------------------------------------------------ */
.chart-box {
    width: 100%;
    max-width: 750px;
    background: white;
    padding: 15px;
    margin: 20px auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Canvas responsive fix */
canvas {
    width: 100% !important;
    height: auto !important;
}

/* ------------------------------------------------------
   Footer
------------------------------------------------------ */
footer {
    background: var(--deep-dark);
    color: var(--white);
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}

/* ------------------------------------------------------
   📱 MOBILE OPTIMALISATIE
------------------------------------------------------ */
@media (max-width: 600px) {

    body {
        padding: 10px;
    }

    header h1 {
        font-size: 22px;
    }

    /* Navigatie onder elkaar */
    nav ul {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    nav ul li {
        width: 80%;
        text-align: center;
    }

    /* Login */
    .login-container {
        margin: 20px auto;
        padding: 10px;
    }

    .login-box {
        padding: 20px;
    }

    /* Cards */
    .sensor-card {
        padding: 15px;
    }

    /* Grafieken */
    .chart-box {
        margin: 15px 0;
    }

}

/* ------------------------------------------------------
   📱 MOBILE UX FIXES (SCROLL + TEKST + GRAFIEKEN)
------------------------------------------------------ */
@media (max-width: 600px) {

    /* 🚫 GEEN horizontaal scrollen */
    html, body {
        overflow-x: hidden;
    }

    * {
        max-width: 100%;
    }

    /* 📏 Basis layout */
    body {
        font-size: 17px;
        padding: 10px;
    }

    /* 📚 Meer ruimte tussen tekst (alleen mobiel) */
    p {
        line-height: 1.6;
        margin-bottom: 12px;
    }

    h2, h3 {
        margin-bottom: 10px;
    }

    /* 🧭 Navigatie 2x2 grid */
    nav ul {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        padding: 0 10px;
    }

    nav ul li {
        width: 100%;
        text-align: center;
        padding: 12px;
        font-size: 15px;
    }

    /* 📦 Content spacing */
    .tabcontent {
        padding: 15px;
    }

    /* 📊 Grafieken */
    .chart-box {
        width: 100%;
        padding: 10px;
        margin: 15px 0;
    }

    canvas {
        width: 100% !important;
        height: 250px !important;
    }

    /* ⏱️ Chart labels kleiner maken (Chart.js) */
    canvas {
        font-size: 10px !important;
    }

    /* 📉 Specifiek Chart.js tweak via container */
    .chart-box {
        font-size: 12px;
    }

    /* 🧾 Login / inputs */
    .login-box input {
        font-size: 16px;
        padding: 14px;
    }

    .login-box button {
        font-size: 16px;
        padding: 14px;
    }

}