:root {
    --primary-color: #7E57C2;
    /* Soft Purple/Blue as main */
    --primary-light: #EDE7F6;
    --pastel-pink: #F8BBD0;
    --pastel-blue: #BBDEFB;
    --pastel-green: #C8E6C9;
    --pastel-orange: #FFE0B2;
    --bg-color: #FAFAFA;
    --text-dark: #2c3e50;
    --text-light: #95a5a6;
    --white: #ffffff;
    --radius: 20px;
    --shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    --font-main: 'Poppins', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: #f3f4f6;
    margin: 0;
    /* Reset */
    overflow-x: hidden;
    /* Remove flex center for desktop feel */
    display: block;
}

.app-container {
    width: 100%;
    max-width: 100%;
    /* Full width */
    min-height: 100vh;
    /* Full height */
    background-color: var(--white);
    position: relative;
    display: flex;
    /* Mobile: Column */
    flex-direction: column;
    box-shadow: none;
    /* remove phone shadow */
    border: none;
    border-radius: 0;
}

/* DESKTOP LAYOUT (Professional Dashboard) */
@media (min-width: 1024px) {
    body {
        background-color: #f3f4f6;
        /* Ensure background is consistent */
    }

    .app-container {
        display: grid;
        grid-template-columns: 280px 1fr;
        /* Sidebar width increased slightly */
        grid-template-rows: auto 1fr;
        max-width: 1600px;
        /* Max constraint for ultra-wide monitors */
        margin: 0 auto;
        /* Center app on ultra-wide */
        background: transparent;
        /* Let body bg show through gaps if any */
        min-height: 100vh;
    }

    /* Header */
    .app-header {
        grid-column: 2 / -1;
        padding: 24px 40px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        position: sticky;
        top: 0;
        z-index: 100;
        margin-top: 0;
        display: flex;
        justify-content: flex-end;
        /* Align profile to right */
        gap: 20px;
    }

    /* Move User Profile to right in header */
    .app-header .user-profile {
        order: 2;
    }

    .app-header .icon-btn {
        order: 1;
        margin-right: auto;
        /* Push notification bell to left of profile or keep right? Let's keep right */
        margin-right: 0;
    }

    /* Actually, let's keep original HTML order but refine spacing */


    /* Sidebar (Navigation) */
    .bottom-nav {
        grid-row: 1 / -1;
        grid-column: 1 / 2;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 40px 24px;
        background: var(--white);
        border-right: 1px solid rgba(0, 0, 0, 0.05);
        height: 100vh;
        position: sticky;
        top: 0;
        border-radius: 0;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.02);
        z-index: 101;
        gap: 12px;
        width: 100%;
        /* Fill grid col */
    }

    /* Sidebar Logo Injection */
    .bottom-nav::before {
        content: "HealthMate";
        font-family: 'Poppins', sans-serif;
        font-weight: 700;
        font-size: 1.8rem;
        color: var(--primary-color);
        margin-bottom: 40px;
        padding-left: 12px;
        display: block;
        width: 100%;
    }

    /* Nav Items Desktop Style */
    .nav-item {
        flex-direction: row;
        width: 100%;
        padding: 16px 20px;
        border-radius: 16px;
        gap: 16px;
        color: var(--text-light);
        transition: all 0.2s ease;
    }

    .nav-item:hover {
        background-color: var(--bg-color);
        color: var(--primary-color);
        transform: translateX(5px);
    }

    .nav-item.active {
        background-color: var(--primary-light);
        color: var(--primary-color);
        font-weight: 600;
        box-shadow: 0 4px 10px rgba(126, 87, 194, 0.15);
        /* Soft shadow matching primary */
    }

    .nav-item .material-icons-round {
        font-size: 24px;
    }

    /* Reveal text label via attribute */
    .nav-item::after {
        content: attr(data-label);
        font-size: 1rem;
    }

    /* Content Area */
    .content-area {
        grid-column: 2 / -1;
        padding: 40px;
        width: 100%;
        max-width: 1200px;
        /* Constrain content width for readability */
        margin: 0 auto;
        /* Center content in the column */
        /* Override mobile padding-bottom */
        padding-bottom: 60px;
    }

    /* Search Bar Adjustment */
    .search-bar {
        max-width: 600px;
        margin-bottom: 40px;
        background: white;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    }

    /* Dashboard Grid */
    .dashboard-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        /* 3 Columns on standard desktop */
        gap: 24px;
    }

    /* Hero Banner spans all */
    .hero-banner {
        grid-column: 1 / -1;
        min-height: 200px;
    }

    /* Feature cards shouldn't be too huge */
    .card {
        min-height: 180px;
        padding: 24px;
    }

    /* Make text scale slightly */
    .card h3 {
        font-size: 1.1rem;
    }

    .card p {
        font-size: 0.9rem;
    }
}

@media (min-width: 1400px) {
    .dashboard-grid {
        grid-template-columns: repeat(4, 1fr);
        /* 4 columns on wide screens */
    }
}

/* Header */
.app-header {
    background: transparent;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 45px;
    height: 45px;
    background: #E1BEE7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.user-info h4 {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 400;
}

.user-info h2 {
    font-size: 1.1rem;
    color: var(--text-dark);
}

.icon-btn {
    background: var(--bg-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

/* Content Area */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 0 24px 100px 24px;
    /* Bottom padding for nav */
}

/* Search Bar */
.search-bar {
    background: var(--bg-color);
    border-radius: 15px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.search-bar input {
    border: none;
    background: transparent;
    width: 100%;
    font-size: 0.95rem;
    color: var(--text-dark);
    outline: none;
}

.search-bar .material-icons-round {
    color: var(--text-light);
}

/* Hero Banner */
.hero-banner {
    background: #263238;
    /* Dark gray from image */
    border-radius: var(--radius);
    padding: 20px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    box-shadow: 0 10px 20px rgba(44, 62, 80, 0.3);
}

.hero-text h3 {
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.hero-text p {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-bottom: 12px;
}

.btn-hero {
    background: var(--pastel-green);
    color: #1b5e20;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
}

/* Section Title */
.section-title {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-dark);
    font-weight: 600;
}

/* Dashboard Grid - Pastel Cards */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    /* 2 columns */
    gap: 16px;
}

.card {
    background: white;
    border-radius: var(--radius);
    padding: 20px;
    min-height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: transform 0.2s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
}

.card:active {
    transform: scale(0.98);
}

.card-icon-box {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.card-icon-box .material-icons-round {
    font-size: 24px;
}

.card h3 {
    font-size: 0.95rem;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.card p {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Specific Card Styles */
.card-symptom {
    background-color: var(--pastel-pink);
}

.card-symptom .card-icon-box {
    background: white;
    color: #E91E63;
}

.card-mental {
    background-color: var(--pastel-blue);
}

.card-mental .card-icon-box {
    background: white;
    color: #2196F3;
}

.card-lifestyle {
    background-color: var(--pastel-orange);
}

.card-lifestyle .card-icon-box {
    background: white;
    color: #FF9800;
}

.card-sleep {
    background-color: #E1BEE7;
}

.card-sleep .card-icon-box {
    background: white;
    color: #9C27B0;
}


/* Feature Views (Mental Health, Symptoms) */
.view {
    display: none;
    padding-top: 20px;
    animation: slideUp 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.chat-bubble {
    background: var(--primary-light);
    padding: 12px 16px;
    border-radius: 16px 16px 16px 0;
    margin-bottom: 12px;
    color: var(--text-dark);
    max-width: 80%;
}

.chat-bubble.ai {
    border-radius: 16px 16px 0 16px;
    background: #E0E0E0;
    margin-left: auto;
}

.symptom-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.symptom-btn {
    background: var(--bg-color);
    border: 1px solid #eee;
    padding: 16px 8px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.symptom-btn.selected {
    background: var(--pastel-pink);
    border-color: #E91E63;
}

/* Analysis Result */
.analysis-result {
    background: #E8F5E9;
    padding: 16px;
    border-radius: 12px;
    margin-top: 20px;
    border-left: 4px solid #4CAF50;
}


/* Bottom Nav - Floating Style */
.bottom-nav {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: #263238;
    /* Dark Pill */
    padding: 12px 24px;
    border-radius: 40px;
    display: flex;
    justify-content: space-between;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    width: auto;
}

.nav-item {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.nav-item.active {
    color: white;
}

.nav-item .material-icons-round {
    font-size: 24px;
}

.nav-text {
    font-size: 0.6rem;
    margin-top: 2px;
}

/* Utilities */
.hidden {
    display: none !important;
}

.btn-primary {
    width: 100%;
    background: var(--primary-color);
    color: white;
    padding: 16px;
    border: none;
    border-radius: 12px;
    margin-top: 20px;
    font-weight: 600;
}