/* --- CARTOON & MODERN THEME VARIABLES --- */
:root {
    --c-yellow: #FFEB3B;
    --c-pink: #FF69B4;
    --c-cyan: #00BCD4;
    --c-green: #76FF03;
    --c-white: #ffffff;
    --c-black: #000000;
    --border-thick: 3px solid var(--c-black);
    --shadow-hard: 5px 5px 0px var(--c-black);
    --shadow-press: 1px 1px 0px var(--c-black);

    /* Mapped variables to support original HTML structure */
    --bg-main: #fde7ee;
    --bg-panel: var(--c-white);
    --text-main: var(--c-black);
    --text-muted: #333333;
    --border: var(--c-black);
    --primary: var(--c-cyan);
    --primary-hover: var(--c-pink);
}

/* Dark mode follows the user's OS/browser preference */
@media (prefers-color-scheme: dark) {
    :root {
        --c-white: #2a2b32;
        --c-black: #e5e2d8;
        --bg-main: #1a1b20;
        --bg-panel: #2a2b32;
        --text-main: #e5e2d8;
        --text-muted: #9a9b9f;
        --border-thick: 3px solid var(--c-black);
        --shadow-hard: 5px 5px 0px var(--c-black);
        --shadow-press: 1px 1px 0px var(--c-black);
    }
}

body { 
    font-family: 'Comic Sans MS', 'Chalkboard SE', 'Marker Felt', sans-serif;
    background: var(--bg-main); 
    color: var(--text-main); 
    margin: 0; 
    padding: 0; 
    transition: background 0.2s, color 0.2s; 
}

/* --- HEADER & DASHBOARD TOP BAR --- */
header, .dashboard-header { 
    display: flex; 
    flex-direction: row; 
    justify-content: space-between; 
    align-items: center;
    background-color: #eee; 
    border: var(--border-thick);
    border-radius: 10px; 
    padding: 15px 25px; 
    margin-top: 20px;
    margin-bottom: 30px;
    flex-wrap: nowrap; /* Forces items to stay on one line */
    gap: 20px;
    max-width: 1350px;
    margin-left: auto;
    margin-right: auto;
}

@media (prefers-color-scheme: dark) {
    header, .dashboard-header {
        background-color: #2a2b32;
    }
}

/* Ensure the title inside the header doesn't break lines */
header h1, .header-title h1 { 
    margin: 0; 
    font-size: 1.5rem;
    text-transform: uppercase;
    font-weight: bold;
    white-space: nowrap;
}

/* Force the button groups to stay strictly on one line */
header > div, .controls, .register-bar {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 15px;
    flex-wrap: nowrap;
    white-space: nowrap;
}

/* Adjust inputs inside the header so they don't break layout */
.register-bar input {
    margin: 0; 
    width: auto;
    min-width: 200px;
}

/* --- LAYOUT & CARDS --- */
main { padding: 2rem; max-width: 1000px; margin: auto; }

.card { 
    background-color: var(--bg-panel);
    border: var(--border-thick);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 10px 10px 0 rgba(0,0,0,0.2);
    margin-bottom: 2rem; 
    position: relative;
}

/* --- FORMS & INPUTS --- */
input, select, textarea { 
    border: var(--border-thick);
    padding: 10px;
    font-family: inherit;
    font-size: 1rem;
    background-color: #f9f9f9;
    width: 100%;
    box-sizing: border-box;
    margin-top: 0.25rem;
    margin-bottom: 10px;
    border-radius: 8px; 
    color: #000;
}

@media (prefers-color-scheme: dark) {
    input, select, textarea {
        background-color: #353640;
        color: var(--text-main);
    }
}

input:focus, select:focus, textarea:focus {
    background-color: #E0F7FA;
    outline: none;
    box-shadow: 4px 4px 0px rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
    input:focus, select:focus, textarea:focus {
        background-color: #2d4f55;
        color: var(--text-main);
    }
}

/* Checkboxes */
input[type="checkbox"] {
    width: 25px;
    height: 25px;
    accent-color: var(--c-pink);
    border: var(--border-thick);
    vertical-align: middle;
    margin-right: 10px;
}

label { font-weight: bold; font-size: 1.1rem; }
.form-group { margin-bottom: 1rem; }
.row { display: flex; gap: 1rem; }
.col { flex: 1; }

/* --- BUTTONS & NAV --- */
button, .btn-secondary, .nav-btn { 
    font-family: inherit;
    font-weight: bold;
    font-size: 1rem;
    text-transform: uppercase;
    cursor: pointer;
    padding: 12px 20px;
    border: var(--border-thick);
    box-shadow: 4px 4px 0px rgba(0,0,0,0.2);
    transition: all 0.1s ease;
    display: inline-block;
    background-color: var(--c-cyan);
    color: var(--c-black);
    border-radius: 8px;
}

/* Alternate button colors */
button:nth-child(even) { background-color: var(--c-pink); }

button:hover, .btn-secondary:hover, .nav-btn:hover { 
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px rgba(0,0,0,0.3);
}

button:active, .btn-secondary:active, .nav-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 1px 1px 0px rgba(0,0,0,0.2);
}

.actions { display: flex; gap: 1rem; margin-top: 1rem; }

/* Nav Buttons specific */
.nav-btn { background-color: var(--c-white); margin: 0 5px; }
.nav-btn:hover { background-color: var(--c-yellow); }
.nav-btn.active { background-color: var(--c-yellow); transform: translate(2px, 2px); box-shadow: 1px 1px 0px rgba(0,0,0,0.2); }

/* --- TABLES --- */
table { 
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 10px;
    background-color: var(--bg-panel);
    border: 2px dashed var(--c-black);
    padding: 15px;
    margin-top: 1rem; 
    border-radius: 10px;
}

th, td { padding: 10px; text-align: left; border-bottom: 2px solid var(--c-black); }

th { 
    font-size: 1.2rem;
    border-bottom: 4px solid var(--c-black);
    margin-bottom: 10px;
    color: var(--c-pink);
    text-transform: uppercase;
    font-weight: bold; 
}

/* --- MODALS & TABS --- */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.8); align-items: center; justify-content: center; z-index: 1000; }

.modal-content { 
    background: var(--bg-panel); 
    padding: 2rem; 
    border: var(--border-thick);
    border-radius: 15px; 
    width: 500px; 
    max-width: 90%; 
    position: relative;
    box-shadow: 10px 10px 0 rgba(0,0,0,0.5);
}

.close { 
    position: absolute; 
    right: 1.5rem; 
    top: 1.5rem; 
    font-size: 2rem; 
    font-weight: bold; 
    cursor: pointer; 
    color: var(--text-main); 
    text-shadow: 2px 2px 0px var(--c-yellow); 
}

.subtitle { color: var(--text-muted); font-size: 1rem; margin-top: -10px; margin-bottom: 1.5rem; font-weight: bold; }

/* Tab Styling */
.tabs { display: flex; border: var(--border-thick); background-color: #eee; border-radius: 10px; padding: 10px; margin-bottom: 20px; }
@media (prefers-color-scheme: dark) {
    .tabs { background-color: #2a2b32; }
}

.tablink { background-color: var(--c-white); flex-grow: 1; margin: 0 5px; border: var(--border-thick); box-shadow: 4px 4px 0px rgba(0,0,0,0.2); color: var(--c-black); border-radius: 8px;}
.tablink.active { background-color: var(--c-yellow); transform: translate(2px, 2px); box-shadow: 1px 1px 0px rgba(0,0,0,0.2); }
.tabcontent { display: none; animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

@keyframes popIn {
    0% { opacity: 0; transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

/* --- CUSTOM CONTEXT MENU --- */
.context-menu {
    display: none;
    position: absolute;
    background: var(--c-white);
    border: var(--border-thick);
    box-shadow: 4px 4px 0px rgba(0,0,0,0.2);
    z-index: 9999;
    border-radius: 8px;
    padding: 8px 0;
    min-width: 150px;
}

@media (prefers-color-scheme: dark) {
    .context-menu {
        box-shadow: 4px 4px 0px rgba(0,0,0,0.4);
    }
}

.context-menu div {
    padding: 10px 16px;
    cursor: pointer;
    font-weight: bold;
    font-size: 1rem;
    color: var(--c-black);
    transition: background 0.2s;
    border-bottom: 2px dashed var(--c-black);
}

.context-menu div:last-child {
    border-bottom: none;
}

.context-menu div:hover {
    background: var(--c-yellow);
}

/* --- IOT DASHBOARD SPECIFIC STYLES --- */
.dashboard-container { 
    padding: 30px; 
    max-width: 1400px; 
    margin: 0 auto; 
}

/* Device Grid & Cards */
.device-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); 
    gap: 25px; 
}

/* Matched to the existing .card style (simplistic modern cartoonish) */
.device-card { 
    background-color: var(--bg-panel); 
    border: var(--border-thick); 
    border-radius: 15px; /* Matched to main .card */
    padding: 20px; 
    cursor: pointer; 
    box-shadow: 10px 10px 0 rgba(0,0,0,0.2); /* Softer modern shadow */
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.device-card:hover { 
    transform: translate(-3px, -3px); 
    box-shadow: 12px 12px 0 rgba(0,0,0,0.25); 
    border-color: var(--c-cyan); 
}

.device-card h3 { 
    font-size: 1.4rem; 
    margin-top: 0;
    margin-bottom: 8px; 
    font-weight: bold; 
    color: var(--text-main);
}

.device-card .uuid { 
    font-size: 0.85rem; 
    color: var(--text-muted); 
    margin-bottom: 16px; 
    font-family: monospace; 
    background: var(--bg-main); 
    padding: 6px 10px; 
    border-radius: 8px; 
    border: 1px solid var(--border); 
}

/* Badges & Status */
.device-card .status { 
    display: inline-flex; 
    align-items: center; 
    gap: 6px; 
    font-size: 0.85rem; 
    font-weight: bold; 
    text-transform: uppercase;
    background: var(--c-green); 
    color: var(--c-black); 
    padding: 6px 12px; 
    border-radius: 20px; /* Modern pill shape */
    border: 2px solid var(--c-black); 
    box-shadow: var(--shadow-press);
}

.empty-state { 
    grid-column: 1 / -1; 
    text-align: center; 
    padding: 60px; 
    color: var(--text-muted); 
    background: var(--bg-panel); 
    border: 2px dashed var(--c-black); 
    border-radius: 15px;
    box-shadow: 8px 8px 0 rgba(0,0,0,0.1);
}

/* Full Screen Modal */
.modal-fullscreen { 
    position: fixed; 
    inset: 0; 
    background: var(--bg-main); 
    z-index: 1000; 
    display: none; 
    flex-direction: column; 
    overflow: hidden; 
}

.modal-fullscreen.active { 
    display: flex; 
}

.modal-app-bar { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    height: 65px; 
    background: var(--c-white); 
    border-bottom: var(--border-thick); 
    padding: 0 30px; 
    box-shadow: 0 4px 0 rgba(0,0,0,0.05);
}

.back-btn { 
    font-weight: bold; 
    font-family: inherit; 
    font-size: 1.1rem; 
    color: var(--c-black); 
    background: none;
    border: none;
    box-shadow: none;
    border-right: 2px dashed var(--c-black); 
    padding-right: 20px;
    border-radius: 0;
}

.back-btn:hover {
    transform: none;
    box-shadow: none;
    color: var(--c-pink);
}

.modal-title-group h2 { 
    font-size: 1.3rem; 
    font-weight: bold; 
    text-transform: uppercase; 
    color: var(--c-black); 
    margin: 0;
}

/* Toast Notifications */
.toast { 
    background: var(--c-white); 
    color: var(--c-black); 
    border: var(--border-thick); 
    box-shadow: 8px 8px 0 rgba(0,0,0,0.2);
    font-family: inherit; 
    font-weight: bold; 
    border-radius: 10px;
    padding: 15px 20px;
}