/* Monochrome Theme & Variables */
:root {
    --bg-dark: #070708;
    --bg-card: rgba(15, 15, 16, 0.7);
    --bg-card-hover: rgba(22, 22, 23, 0.85);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-focus: rgba(255, 255, 255, 0.3);
    
    --primary: #ffffff;
    --primary-gradient: linear-gradient(180deg, #ffffff 0%, #d4d4d8 100%);
    --accent: #27272a;
    
    --text-main: #f4f4f5;
    --text-muted: #71717a;
    --text-inverse: #000000;
    
    --protein-color: #ffffff;
    --carbs-color: #a1a1aa;
    --fat-color: #3f3f46;
    
    --shadow-premium: 0 20px 50px rgba(0, 0, 0, 0.9), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --font-outfit: 'Outfit', 'Plus Jakarta Sans', sans-serif;
}

/* Reset and Globals */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    /* Subtle tech grid background */
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--text-main);
    font-family: 'Plus Jakarta Sans', var(--font-outfit);
    overflow-x: hidden;
    height: 100vh;
}

/* Auth / Signup gateway wrapper */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100vw;
    background: radial-gradient(circle at center, #18181b 0%, #09090b 100%);
    padding: 1.5rem;
    z-index: 50;
    position: fixed;
    top: 0;
    left: 0;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: 3rem 2.5rem;
    border-radius: 28px;
    position: relative;
    overflow: hidden;
}

/* Glowing top card borders (Linear/Apple style) */
.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
}

.auth-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.logo-icon-mono {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.auth-brand h2 {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-family: var(--font-outfit);
}

.auth-brand h2 span {
    color: var(--text-muted);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    font-family: var(--font-outfit);
}

.auth-header p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar Navigation */
.sidebar {
    width: 270px;
    background-color: #09090b;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 2.25rem 1.5rem;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    padding-left: 0.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

.brand h2 {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-family: var(--font-outfit);
}

.brand h2 span {
    color: var(--text-muted);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 2rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1.1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 12px;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid transparent;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
    color: var(--primary);
}

/* Sidebar profile card */
.sidebar-profile-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 16px;
    margin-top: auto;
    margin-bottom: 1.5rem;
    position: relative;
}

.profile-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1.5px;
    font-weight: 800;
    display: block;
    margin-bottom: 0.5rem;
}

.sidebar-profile-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    font-family: var(--font-outfit);
}

.sidebar-profile-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.85rem;
}

.profile-stat-bar {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    gap: 0.5rem;
}

.profile-stat-bar div {
    display: flex;
    flex-direction: column;
}

.profile-stat-bar .label {
    font-size: 0.6rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 700;
}

.profile-stat-bar .value {
    font-size: 0.85rem;
    font-weight: 800;
}

.api-status-badge {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.01);
}

.api-status-badge.active {
    color: var(--primary);
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.03);
}

.api-status-badge.active .status-dot {
    background-color: var(--primary);
    box-shadow: 0 0 10px var(--primary);
}

.api-status-badge.inactive {
    color: var(--text-muted);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-muted);
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 2.5rem;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.welcome h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    font-family: var(--font-outfit);
    margin-bottom: 0.35rem;
}

.welcome p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
    position: relative;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    pointer-events: none;
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

/* Layout Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1.45fr 1fr;
    gap: 1.75rem;
    align-items: start;
    flex-grow: 1;
}

.dashboard-section {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.metric-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
}

.metric-row.secondary {
    grid-template-columns: 1fr 1.35fr;
}

/* Calorie Ring */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.card-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    font-family: var(--font-outfit);
    color: var(--text-main);
}

.tag {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.calorie-progress-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem 0;
}

.circular-progress {
    position: relative;
    width: 170px;
    height: 170px;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring-value {
    stroke-dasharray: 452;
    stroke-dashoffset: 452;
    transition: stroke-dashoffset 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.progress-inner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.progress-inner-text .value {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-family: var(--font-outfit);
    color: var(--text-main);
}

.progress-inner-text .label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 2px;
}

/* Macro chart via Canvas */
.canvas-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 1.5rem;
    padding: 0.75rem 0;
}

.canvas-legend {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.legend-item {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.legend-dot.protein { background-color: var(--protein-color); border: 1px solid var(--border-color-focus); }
.legend-dot.carbs { background-color: var(--carbs-color); }
.legend-dot.fat { background-color: var(--fat-color); }

.trend-chart-container {
    padding: 0.5rem 0;
    width: 100%;
    height: 160px;
    display: flex;
    justify-content: center;
}

/* Water Tracker */
.water-tracker-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 0.5rem 0;
}

.water-container {
    position: relative;
    width: 84px;
    height: 124px;
    background: rgba(255, 255, 255, 0.01);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: 14px 14px 20px 20px;
    overflow: hidden;
    box-shadow: inset 0 8px 24px rgba(0,0,0,0.6);
}

.water-level {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(180deg, #ffffff 0%, #27272a 100%);
    transition: height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.water-wave {
    position: absolute;
    top: -10px;
    left: 0;
    width: 200%;
    height: 20px;
    background: #ffffff;
    opacity: 0.35;
    border-radius: 40%;
    animation: wave 4s infinite linear;
}

@keyframes wave {
    0% { transform: translateX(0) rotate(0deg); }
    100% { transform: translateX(-50%) rotate(360deg); }
}

.water-bottle-outline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    box-shadow: inset 0 4px 12px rgba(255,255,255,0.02);
}

.water-controls {
    display: flex;
    gap: 0.5rem;
    width: 100%;
}

.btn-water {
    flex-grow: 1;
    font-size: 0.8rem;
    padding: 0.6rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.btn-water:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: translateY(-1px);
}

/* Meal Logger tab styling */
.card-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: -0.5rem;
    margin-bottom: 1.25rem;
}

.logger-tabs {
    display: flex;
    gap: 0.25rem;
    background: rgba(0,0,0,0.4);
    padding: 0.25rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

.log-tab {
    flex-grow: 1;
    background: transparent;
    border: none;
    padding: 0.5rem;
    border-radius: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.log-tab.active {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-main);
}

.log-input-container {
    margin-bottom: 1.25rem;
}

.input-panel {
    display: none;
}

.input-panel.active {
    display: block;
}

.input-panel textarea {
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    resize: none;
    outline: none;
    transition: var(--transition-smooth);
    line-height: 1.5;
}

.input-panel textarea:focus {
    border-color: var(--border-color-focus);
}

.upload-dropzone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    height: 130px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.upload-dropzone:hover {
    border-color: var(--text-main);
    background: rgba(255,255,255,0.01);
}

.upload-dropzone p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
}

.preview-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 10px;
    overflow: hidden;
    background: #000;
}

.preview-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.remove-preview-btn {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(0,0,0,0.85);
    color: white;
    border: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.35rem;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: inherit;
    font-size: 0.9rem;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
    background: #e4e4e7;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.25);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-color-focus);
}

.btn-icon {
    padding: 0.75rem;
    width: 42px;
    height: 42px;
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 0.45rem 0.85rem;
    font-size: 0.75rem;
    border-radius: 8px;
}

/* Scanner Animation Laser */
.scanner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.scanner-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.scanner-bar {
    width: 80%;
    height: 2px;
    background: var(--primary);
    box-shadow: 0 0 12px var(--primary);
    animation: scan 2s infinite ease-in-out;
}

.scanner-msg {
    margin-top: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-main);
    font-weight: 600;
    letter-spacing: 0.5px;
}

@keyframes scan {
    0% { transform: translateY(-50px); }
    50% { transform: translateY(50px); }
    100% { transform: translateY(-50px); }
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s infinite linear;
}

/* Journal Controls & Search Filters */
.journal-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-input {
    background: rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.45rem 0.75rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.8rem;
    outline: none;
    width: 150px;
    transition: var(--transition-smooth);
}

.search-input:focus {
    width: 200px;
    border-color: var(--border-color-focus);
    background: rgba(0,0,0,0.6);
}

/* Food Journal logs Table list */
.logs-container {
    overflow-x: auto;
}

.logs-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.85rem;
}

.logs-table th {
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.5px;
}

.logs-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.log-title {
    font-weight: 700;
    color: var(--text-main);
    display: block;
}

.log-time {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.log-tag {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.15rem 0.45rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    margin-right: 0.3rem;
    border: 1px solid var(--border-color);
}

.delete-log-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

.delete-log-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.06);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
    padding: 2.5rem;
    gap: 0.75rem;
}

.empty-state p {
    font-size: 0.85rem;
}

/* Chat Coach Section */
.chat-section {
    height: calc(100vh - 4rem - 32px);
    position: sticky;
    top: 2rem;
}

.chat-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 0;
    overflow: hidden;
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.coach-profile {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.avatar {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
}

.coach-meta h4 {
    font-size: 0.95rem;
    font-weight: 700;
    font-family: var(--font-outfit);
}

.active-badge {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 700;
    display: block;
    margin-top: 0.1rem;
}

.chat-messages {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.chat-messages::-webkit-scrollbar, .main-content::-webkit-scrollbar {
    width: 5px;
}

.chat-messages::-webkit-scrollbar-thumb, .main-content::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.06);
    border-radius: 4px;
}

.message {
    max-width: 82%;
    padding: 0.85rem 1.1rem;
    border-radius: 16px;
    font-size: 0.85rem;
    line-height: 1.5;
}

.message.system-message {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-top-left-radius: 3px;
    color: var(--text-main);
}

.message.user-message {
    background: var(--primary);
    color: var(--text-inverse);
    align-self: flex-end;
    border-top-right-radius: 3px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(255,255,255,0.1);
}

.message.assistant-message {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    align-self: flex-start;
    border-top-left-radius: 3px;
    color: var(--text-main);
}

.message p {
    white-space: pre-line;
}

.suggestions-wrapper {
    padding: 0 1rem;
    margin-bottom: 0.5rem;
}

.suggestions-container {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.suggestions-container::-webkit-scrollbar {
    height: 3px;
}

.suggestion-chip {
    flex-shrink: 0;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.85rem;
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.suggestion-chip:hover {
    color: var(--text-main);
    border-color: var(--border-color-focus);
    background: rgba(255,255,255,0.04);
}

.chat-input-area {
    display: flex;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: rgba(9, 9, 11, 0.8);
}

.chat-input-area input {
    flex-grow: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.chat-input-area input:focus {
    border-color: var(--border-color-focus);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.94);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    width: 90%;
    max-width: 450px;
    padding: 2.5rem;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-outfit);
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    line-height: 1;
}

.modal-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input, .form-group select {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--border-color-focus);
    background: rgba(0, 0, 0, 0.5);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.75rem;
}

.settings-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 0.55rem 1rem;
    border-radius: 10px;
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 600;
    font-family: inherit;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.settings-btn:hover {
    color: var(--text-main);
    border-color: var(--border-color-focus);
    background: rgba(255, 255, 255, 0.05);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    .chat-section {
        height: 580px;
        position: static;
    }
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        padding: 1rem 1.25rem;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    .brand {
        margin-bottom: 0;
    }
    .nav-menu {
        flex-direction: row;
        flex-grow: 0;
        margin-bottom: 0;
        gap: 0.4rem;
    }
    .sidebar-profile-card, .api-status-badge {
        display: none;
    }
    .main-content {
        padding: 1.5rem 1rem;
    }
    .metric-row {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    .metric-row.secondary {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
}