:root {
    /* Official Android Brand Colors */
    --android-green: #3ddc84;
    --android-green-light: #cfe9d7; /* Desaturated secondary accent */
    --android-green-dark: #0a1f15; /* On-secondary accent */
    --android-black: #000000;
    --android-white: #ffffff;
    --android-blue: #4285f4;
    --android-gray-700: #3c4043;
    --android-gray-200: #e8eaed;
    --android-gray-100: #f1f3f4;

    /* Unofficial Colors */
    --urgent-red-bg: #c81e1e;
    --urgent-red-font: #fce8e6;
    --light-blue-bg: #e8f0fe;
    --alt-green: #1b5e20;

    /* Material Design 3 Tokens (M3) */
    --md-sys-color-primary: var(--android-green);
    --md-sys-color-on-primary: var(--android-black);
    --md-sys-color-surface: var(--android-white);
    --md-sys-color-surface-variant: var(--android-gray-100);
    --md-sys-color-on-surface: var(--android-gray-700);
    --md-sys-color-primary-container: var(--android-green);
    --md-sys-color-on-primary-container: var(--android-black);
    --md-sys-color-secondary: var(--android-green-light);
    --md-sys-color-on-secondary: var(--android-green-dark);
    --md-sys-color-secondary-container: var(--android-green-light);
    --md-sys-color-on-secondary-container: var(--android-green-dark);
    --md-sys-color-background: var(--android-white);
    --md-sys-color-on-background: var(--android-black);
    --md-sys-color-surface-container: var(--android-gray-100);
    --md-sys-color-surface-container-high: var(--android-gray-200);
    --md-sys-color-surface-container-highest: var(--android-gray-200);
    --md-sys-color-outline: var(--android-gray-700);
    --md-sys-color-outline-variant: var(--android-gray-200);

    --transition-speed: 0.2s;
    --sidebar-width: 220px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    font-family: "Roboto", sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* --- LAYOUT STRUCTURE --- */
.app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

main {
    padding: 24px;
    padding-bottom: 100px;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

/* --- CONTENT STYLES --- */
h1 {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 24px;
    color: var(--android-black);
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--android-gray-700);
    margin-top: -16px;
    margin-bottom: 40px;
    font-size: 1rem;
}

/* --- HOME & DIRECTIVES PAGE --- */
.featured-directive {
    background: var(--android-gray-100);
    padding: 32px;
    border-radius: 28px;
    margin-bottom: 40px;
    border: 1px solid var(--android-gray-200);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.featured-directive .label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--android-gray-700);
}

.featured-directive h2 {
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--android-black);
    margin-bottom: 8px;
}

.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.column-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--android-gray-700);
    text-transform: uppercase;
    margin-bottom: 16px;
    display: block;
}

.priority-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.priority-card,
.priority-item {
    background: var(--android-white);
    border: 1px solid var(--android-gray-200);
    border-radius: 20px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    border-left: 5px solid var(--android-green);
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.priority-card:hover,
.priority-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

.priority-card.blue-accent,
.priority-item.blue-accent {
    border-left-color: var(--android-blue);
}

.priority-card strong,
.priority-item strong {
    color: var(--android-black);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.priority-card span,
.priority-item span {
    font-size: 0.95rem;
    color: var(--android-gray-700);
}

.link-bubble-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
}

.link-bubble {
    display: inline-flex;
    align-items: center;
    background: var(--android-gray-100);
    color: var(--android-gray-700);
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.link-bubble:hover {
    background: var(--android-gray-200);
    color: var(--android-black);
    border-color: var(--android-gray-700);
}

.link-bubble svg {
    margin-right: 4px;
}

article {
    background: var(--android-white);
    padding: 24px;
    border-radius: 28px;
    margin-bottom: 16px;
    border: 1px solid var(--android-gray-200);
}

.chip {
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 16px;
}

h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--android-black);
}

p {
    color: var(--android-gray-700);
    font-size: 1rem;
    line-height: 1.6;
}

a img {
    transition: transform var(--transition-speed) ease;
}

a:hover img {
    transform: scale(1.02);
}

/* --- RESOURCES PAGE STYLES --- */
.resource-group-card {
    background: var(--android-white);
    border: 1px solid var(--android-gray-200);
    border-radius: 28px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.resource-group-card h2 {
    font-size: 1.5rem;
    color: var(--android-black);
    margin-bottom: 16px;
    font-weight: 500;
    border-bottom: 1px solid var(--android-gray-200);
    padding-bottom: 16px;
}

.resource-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 0;
    border-bottom: 1px solid var(--android-gray-200);
    gap: 16px;
}

.resource-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.resource-info {
    flex-grow: 1;
}

.resource-info h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.action-btn {
    display: inline-block;
    padding: 10px 24px;
    background: var(--android-gray-100);
    color: var(--android-black);
    text-decoration: none;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.9rem;
    transition:
        background var(--transition-speed),
        color var(--transition-speed);
    white-space: nowrap;
    text-align: center;
    width: 100%;
}

.action-btn:hover {
    background: var(--android-green);
    color: var(--android-black);
}

/* --- TRAINING PAGE STYLES --- */
.qr-section {
    margin-bottom: 40px;
}

.qr-layout-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.qr-container {
    background: var(--android-white);
    border: 1px solid var(--android-gray-200);
    padding: 16px;
    border-radius: 20px;
}

.qr-container img {
    display: block;
    width: 300px;
    height: 300px;
    max-width: 100%;
    object-fit: contain;
    border-radius: 12px;
}

.qr-button-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 300px;
    max-width: 100%;
}

.qr-side-btn {
    display: block;
    padding: 12px 18px;
    background: var(--android-gray-100);
    color: var(--android-black);
    text-decoration: none;
    border-radius: 100px;
    font-weight: 500;
    text-align: center;
    transition: background var(--transition-speed);
    white-space: nowrap;
    min-width: max-content;
}

.qr-side-btn:hover {
    background: var(--android-gray-200);
}

.training-modules {
    margin-bottom: 24px;
}

.module-header {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--android-black);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--android-gray-200);
}

.training-card {
    background: var(--android-white);
    border: 1px solid var(--android-gray-200);
    border-radius: 24px;
    padding: 24px;
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
}

.training-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

.training-badge {
    align-self: flex-start;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--android-gray-100);
    color: var(--android-gray-700);
}

.badge-completed {
    background: var(--android-green);
    color: var(--android-black);
}

.badge-mandatory {
    background: #fce8e6; /* Light Red */
    color: #ea4335; /* Google Red */
}

.badge-new {
    background: #e8f0fe; /* Light Blue */
    color: var(--android-blue);
}

.training-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--android-black);
    margin: 0;
}

.training-description {
    color: var(--android-gray-700);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
}

.training-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--android-gray-700);
    font-weight: 500;
    margin-bottom: 8px;
}

.start-button {
    align-self: flex-start;
    padding: 10px 24px;
    background: var(--android-black);
    color: var(--android-white);
    text-decoration: none;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background var(--transition-speed);
}

.start-button:hover {
    background: var(--android-gray-700);
}

/* --- FOOTER & BRAND COMPLIANCE --- */
.legal-footer {
    margin-top: 80px;
    padding-bottom: 40px;
    border-top: 1px solid var(--android-gray-200);
    padding-top: 24px;
    width: 100%;
}

.legal-footer p {
    font-size: 7px;
    color: var(--android-gray-700);
    line-height: 1.6; /* Balanced for M3 readability */
    margin-bottom: 2px;
}

.legal-footer p:last-child {
    margin-bottom: 0;
}

/* --- DESKTOP ADAPTATION (600px+) --- */
@media (min-width: 600px) {
    main {
        padding: 64px;
        margin-left: 80px;
        max-width: calc(1000px + var(--sidebar-width));
    }

    h1 {
        font-size: 3.5rem;
    }

    article {
        padding: 32px;
    }

    .card-grid {
        grid-template-columns: 1fr 1fr;
    }

    .resource-group-card {
        padding: 32px;
    }

    .resource-item {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .action-btn {
        width: auto;
    }

    .training-card {
        padding: 32px;
    }
}

/* --- WIDE DESKTOP ADAPTATION (1000px+) --- */
@media (min-width: 1000px) {
    .qr-layout-wrapper {
        flex-direction: row;
        align-items: flex-start;
        justify-content: flex-start;
        gap: 32px;
    }

    .qr-button-column {
        flex-grow: 1;
        width: auto;
        height: 332px; /* matches 300px QR code + 16px top/bottom padding */
        justify-content: space-around;
        gap: 0;
    }

    .qr-side-btn {
        padding: 18px;
    }
}

/* --- UNIVERSAL CARD SYSTEM --- */

/* Base Card Style (Matches Hub aesthetic) */
.card-s,
.card-l {
    background: var(--android-white);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: 28px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
    width: 100%;
    box-sizing: border-box;
}

.card-s:hover,
.card-l:hover {
    transform: translateY(-2px);
}

/* Card-S: Small Card (2-up on desktop) */
/* (Base is full width, desktop media query handles the 2-up layout) */

/* Card-L: Large Card (Always full width of container) */
.card-l {
    grid-column: 1 / -1; /* Spans all columns in a grid */
}

/* Layout Containers */
.grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 40px;
    width: 100%;
}

@media (min-width: 1000px) {
    .grid-container {
        grid-template-columns: 1fr 1fr;
    }
}

/* Component consistency inside cards */
.card-title {
    margin: 0;
    color: var(--md-sys-color-on-surface);
}
.card-description {
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
    line-height: 1.5;
}
.card-badge {
    align-self: flex-start;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

.badge-completed {
    background: var(--android-green);
    color: var(--android-black);
}

.badge-new {
    background: var(--android-green-light);
    color: var(--android-green-dark);
}

.badge-blue {
    background: var(--android-blue);
    color: var(--android-white);
}

.badge-light-blue {
    background: var(--light-blue-bg);
    color: var(--android-blue);
}

.badge-default {
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

.training-title {
    margin: 0;
    color: var(--md-sys-color-on-surface);
}

.training-description {
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
    line-height: 1.5;
}

.training-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
}

.start-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background-color: var(--android-black);
    color: var(--android-white);
    text-decoration: none;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.start-button:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background-color: var(--android-gray-700);
    color: var(--android-white);
}

.card-footer {
    display: flex;
    justify-content: flex-start;
    margin-top: 8px;
}

/* --- UNIVERSAL CARD SYSTEM --- */

/* Base Card Style (Matches Hub aesthetic) */
.card-s,
.card-l {
    background: var(--android-white);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: 28px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;
    width: 100%;
    box-sizing: border-box;
}

.card-s:hover,
.card-l:hover {
    transform: translateY(-2px);
}

/* Card-S: Small Card (2-up on desktop) */
/* (Base is full width, desktop media query handles the 2-up layout) */

/* Card-L: Large Card (Always full width of container) */
.card-l {
    grid-column: 1 / -1; /* Spans all columns in a grid */
}

/* Layout Containers */
.grid-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 40px;
    width: 100%;
}

@media (min-width: 1000px) {
    .grid-container {
        grid-template-columns: 1fr 1fr;
    }
}

/* Component consistency inside cards */
.card-title {
    margin: 0;
    color: var(--md-sys-color-on-surface);
}
.card-description {
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
    line-height: 1.5;
}
.card-badge {
    align-self: flex-start;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

.badge-completed {
    background: var(--android-green);
    color: var(--android-black);
}

.badge-new {
    background: var(--android-green-light);
    color: var(--android-green-dark);
}

.badge-blue {
    background: var(--android-blue);
    color: var(--android-white);
}

.badge-light-blue {
    background: var(--light-blue-bg);
    color: var(--android-blue);
}

.badge-default {
    background: var(--md-sys-color-surface-container-highest);
    color: var(--md-sys-color-on-surface-variant);
}

.training-title {
    margin: 0;
    color: var(--md-sys-color-on-surface);
}

.training-description {
    color: var(--md-sys-color-on-surface-variant);
    margin: 0;
    line-height: 1.5;
}

.training-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--md-sys-color-on-surface-variant);
    font-weight: 500;
}

.start-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background-color: var(--android-black);
    color: var(--android-white);
    text-decoration: none;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.start-button:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background-color: var(--android-gray-700);
    color: var(--android-white);
}

.card-footer {
    display: flex;
    justify-content: flex-start;
    margin-top: 8px;
}