:root {
    /* Dark Mode */
    --bg-main: #131314;
    --bg-card: #1e1f20;
    --bg-header: #1e1f20;
    --bg-input: #1e1f20;
    --bg-input-control: #28292a;
    --bg-user-msg: #282a2c;

    --border-color: #333538;
    --border-header: #2d2f31;

    --text-main: #e3e3e3;
    --text-muted: #8e918f;
    --text-header: #f1f3f4;

    --input-text: #e3e3e3;

    --accent-color: #a8c7fa;

    --btn-download-bg: #2b394e;
    --btn-download-text: #a8c7fa;
}

/* Light Mode Theme */
[data-theme="light"] {
    --bg-main: #f8f9fa;
    --bg-card: #ffffff;
    --bg-header: #ffffff;
    --bg-input: #ffffff;
    --bg-input-control: #f1f3f4;
    --bg-user-msg: #e9ecef;

    --border-color: #e0e0e0;
    --border-header: #e0e0e0;

    --text-main: #1f1f1f;
    --text-muted: #5f6368;
    --text-header: #1f1f1f;

    --input-text: #1f1f1f;

    --accent-color: #0b57d0;

    --btn-download-bg: #e8f0fe;
    --btn-download-text: #0b57d0;
}


/* =========================================================
   Reset
   ========================================================= */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}


/* =========================================================
   Header Navigation
   ========================================================= */

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-header);
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease;
}

.brand-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-header);
}

.brand-title i {
    color: var(--accent-color);
    font-size: 1.3rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-btn {
    background: var(--bg-input-control);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
    opacity: 0.8;
}

.header-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    background: var(--bg-input-control);
    padding: 6px 12px;
    border-radius: 20px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #34a853;
}


/* =========================================================
   Main Chat Area
   ========================================================= */

.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    scroll-behavior: smooth;
}

.chat-messages {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    gap: 16px;
    animation: fadeIn 0.3s ease-in-out;
    width: 100%;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.message.user .avatar {
    background-color: var(--bg-input-control);
    color: var(--text-main);
}

.message.assistant .avatar {
    background: linear-gradient(
        135deg,
        var(--accent-color),
        #7cacf8
    );
    color: #040e1e;
}

.message-content {
    flex: 1;
    line-height: 1.6;
    font-size: 0.95rem;
    color: var(--text-main);
    padding-top: 4px;
}

.message.user .message-content {
    background-color: var(--bg-user-msg);
    padding: 12px 16px;
    border-radius: 12px;
}


/* =========================================================
   Cards & Components
   ========================================================= */

.analysis-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.card-header {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-color);
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.sentiment-badge-group {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.badge {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
}

.badge.positive {
    background: rgba(52, 168, 83, 0.15);
    color: #2e7d32;
    border: 1px solid rgba(52, 168, 83, 0.3);
}

.badge.neutral {
    background: rgba(251, 188, 4, 0.15);
    color: #f57f17;
    border: 1px solid rgba(251, 188, 4, 0.3);
}

.badge.negative {
    background: rgba(234, 67, 53, 0.15);
    color: #c62828;
    border: 1px solid rgba(234, 67, 53, 0.3);
}

.list-section {
    margin-top: 8px;
}

.list-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.styled-list {
    list-style: none;
    padding-left: 0;
}

.styled-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 6px;
    font-size: 0.9rem;
    color: var(--text-main);
}

.styled-list li::before {
    content: "•";
    position: absolute;
    left: 6px;
    color: var(--accent-color);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--btn-download-bg);
    color: var(--btn-download-text);
    padding: 8px 14px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 10px;
    border: 1px solid var(--border-color);
}


/* =========================================================
   Bottom Controls & Input
   ========================================================= */

.input-container-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 0 16px 20px 16px;
    background-color: var(--bg-main);
    transition: background-color 0.3s ease;
}

.input-box {
    width: 100%;
    max-width: 800px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 10px 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition:
        background-color 0.3s ease,
        border-color 0.3s ease;
}


/* =========================================================
   Input Controls
   ========================================================= */

.input-controls {
    display: flex;
    gap: 12px;
    align-items: center;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.input-controls label {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.control-select,
.control-input {
    background-color: var(--bg-input-control);
    color: var(--text-main) !important;
    -webkit-text-fill-color: var(--text-main);

    border: 1px solid var(--border-color);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.78rem;
    outline: none;
}


/* =========================================================
   Input Row
   ========================================================= */

.input-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-input {
    flex: 1;
    width: 100%;
    background-color: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    font-size: 0.95rem;
    resize: none;
    min-height: 24px;
    max-height: 120px;
    line-height: 24px;
}

.chat-input::placeholder {
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
    opacity: 0.8;
}

.chat-input:focus {
    color: var(--input-text) !important;
    -webkit-text-fill-color: var(--input-text);
}


/* =========================================================
   Send Button
   ========================================================= */

.send-btn {
    background-color: var(--accent-color);
    color: #ffffff;
    border: none;

    width: 36px;
    height: 36px;
    border-radius: 50%;

    display: flex;
    align-items: center;
    justify-content: center;

    cursor: pointer;
    flex-shrink: 0;
}

.send-btn:disabled {
    background-color: var(--bg-input-control);
    color: var(--text-muted);
    cursor: not-allowed;
}


/* =========================================================
   Typing Indicator
   ========================================================= */

.typing-indicator {
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 8px 0;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}


/* =========================================================
   Scrollbar
   ========================================================= */

.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-track {
    background: transparent;
}

.chat-container::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 10px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}


/* =========================================================
   Trend & Viral Analysis Components (Trend Cards)
   ========================================================= */

.trend-summary-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.trend-cards-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 12px;
}

.trend-card-item {
    background: var(--bg-input-control);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.trend-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.trend-rank-badge {
    background: linear-gradient(135deg, #fbbc04, #ea4335);
    color: #000;
    font-weight: 700;
    font-size: 0.78rem;
    padding: 3px 10px;
    border-radius: 12px;
    white-space: nowrap;
}

.trend-title-text {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Trend Score Bar */
.trend-score-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.trend-score-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 500;
}

.trend-score-track {
    width: 100%;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    overflow: hidden;
}

.trend-score-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* Metrics Grid */
.trend-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 4px 0;
}

.metric-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    text-align: center;
}

.metric-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-color);
}

.metric-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Evidence vs Interpretation */
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 6px;
}

.evidence-tag {
    background: rgba(66, 133, 244, 0.15);
    color: #4285f4;
    border: 1px solid rgba(66, 133, 244, 0.3);
}

.interpretation-tag {
    background: rgba(171, 71, 188, 0.15);
    color: #ab47bc;
    border: 1px solid rgba(171, 71, 188, 0.3);
}

.interpretation-text {
    font-size: 0.88rem;
    color: var(--text-main);
    background: var(--bg-card);
    padding: 8px 12px;
    border-radius: 6px;
    border-left: 3px solid #ab47bc;
    line-height: 1.5;
}

.styled-list.mini li {
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.trend-meta-footer {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
    font-size: 0.82rem;
}

.opp-box {
    background: rgba(52, 168, 83, 0.1);
    color: #2e7d32;
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid rgba(52, 168, 83, 0.2);
}

.risk-box {
    background: rgba(234, 67, 53, 0.1);
    color: #c62828;
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid rgba(234, 67, 53, 0.2);
}

/* Viral Formulas Grid */
.viral-formulas-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 8px;
}

.formula-card {
    background: var(--bg-input-control);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.88rem;
}

.formula-name {
    font-weight: 600;
    color: var(--accent-color);
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.formula-detail.do {
    color: #34a853;
}

.formula-detail.dont {
    color: #ea4335;
}

/* Content Ideas (Creative Concepts) Grid */
.content-ideas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin-top: 8px;
}

.concept-card {
    background: var(--bg-input-control);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
}

.concept-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    background: rgba(52, 168, 83, 0.15);
    color: #34a853;
    padding: 2px 8px;
    border-radius: 12px;
    width: fit-content;
}

.concept-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.concept-row {
    font-size: 0.85rem;
    color: var(--text-main);
    line-height: 1.4;
}

.concept-row.grounding {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 6px 8px;
    border-radius: 6px;
    margin-top: 4px;
}