/* ============================================
   CONX — Intelligent Recruiting Platform
   Design System: Minimalist, Silver/Grey, Colorless
   ============================================ */

/* CSS Variables */
:root {
    /* Monochromatic Grey Scale */
    --color-pure-white: #ffffff;
    --color-white: #fafafa;
    --color-grey-50: #f5f5f5;
    --color-grey-100: #e8e8e8;
    --color-grey-200: #d4d4d4;
    --color-grey-300: #b8b8b8;
    --color-grey-400: #9a9a9a;
    --color-grey-500: #7a7a7a;
    --color-grey-600: #5c5c5c;
    --color-grey-700: #404040;
    --color-grey-800: #2a2a2a;
    --color-grey-900: #1a1a1a;
    --color-pure-black: #0a0a0a;
    
    /* Silver Accents */
    --color-silver-light: #e8e8e8;
    --color-silver: #c0c0c0;
    --color-silver-dark: #a0a0a0;
    --color-silver-dim: #808080;
    
    /* Subtle Warm Grey (for minimal warmth) */
    --color-warm-grey: #f0f0f0;
    
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows - subtle grey */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 72px;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-grey-600);
    background-color: var(--color-grey-100);
    min-height: 100vh;
}

/* ============================================
   APP CONTAINER
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--color-grey-900) 0%, var(--color-pure-black) 100%);
    border-right: 1px solid var(--color-grey-800);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

/* Logo */
.logo-container {
    padding: var(--space-6) var(--space-5);
    border-bottom: 1px solid var(--color-grey-800);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: var(--space-2);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-pure-white);
    letter-spacing: -0.02em;
}

.logo-x {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-x-svg {
    width: 40px;
    height: 40px;
    overflow: visible;
}

.x-line {
    stroke-width: 3;
    stroke-linecap: round;
    fill: none;
    stroke-dasharray: 34;
    stroke-dashoffset: 34;
    animation: drawX 1.2s ease-out forwards;
}

.x-line-1 {
    stroke: var(--color-silver);
}

.x-line-2 {
    stroke: var(--color-grey-400);
    animation-delay: 0.3s;
}

@keyframes drawX {
    to {
        stroke-dashoffset: 0;
    }
}

.logo-x:hover .x-line {
    animation: drawX 0.8s ease-out forwards;
}

.logo-tagline {
    font-size: var(--text-xs);
    color: var(--color-grey-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* Navigation */
.nav-menu {
    flex: 1;
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-grey-400);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-base);
    position: relative;
}

.nav-item:hover {
    color: var(--color-pure-white);
    background-color: var(--color-grey-800);
}

.nav-item.active {
    color: var(--color-pure-white);
    background-color: var(--color-grey-700);
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background-color: var(--color-grey-700);
    color: var(--color-grey-300);
    font-size: var(--text-xs);
    font-weight: 600;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
    min-width: 24px;
    text-align: center;
}

.nav-badge.live {
    background-color: var(--color-silver);
    color: var(--color-grey-900);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--color-grey-800);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-grey-600) 0%, var(--color-grey-700) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-pure-white);
    font-size: var(--text-sm);
    font-weight: 600;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    color: var(--color-pure-white);
    font-size: var(--text-sm);
    font-weight: 600;
}

.user-role {
    color: var(--color-grey-500);
    font-size: var(--text-xs);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    height: var(--header-height);
    background-color: var(--color-pure-white);
    border-bottom: 1px solid var(--color-grey-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-8);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.page-title {
    font-family: var(--font-serif);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-grey-900);
}

.session-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-grey-500);
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-grey-600);
    border-radius: var(--radius-full);
    animation: blink 2s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.header-actions {
    display: flex;
    gap: var(--space-3);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    outline: none;
}

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background-color: var(--color-grey-800);
    color: var(--color-pure-white);
}

.btn-primary:hover {
    background-color: var(--color-grey-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-grey-100);
    color: var(--color-grey-700);
    border: 1px solid var(--color-grey-200);
}

.btn-secondary:hover {
    background-color: var(--color-grey-200);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-grey-300);
    color: var(--color-grey-600);
}

.btn-outline:hover {
    border-color: var(--color-grey-600);
    color: var(--color-grey-800);
}

/* ============================================
   CONTENT GRID
   ============================================ */
.content-grid {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--space-6);
    padding: var(--space-6) var(--space-8);
    overflow: hidden;
}

/* ============================================
   CHAT SECTION
   ============================================ */
.chat-section {
    background-color: var(--color-pure-white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-grey-200);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.chat-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-grey-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.candidate-info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.candidate-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-grey-300) 0%, var(--color-grey-400) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-pure-white);
    font-size: var(--text-sm);
    font-weight: 600;
    border: 2px solid var(--color-grey-200);
}

.candidate-details h3 {
    color: var(--color-grey-900);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.candidate-details span {
    color: var(--color-grey-500);
    font-size: var(--text-sm);
}

.chat-actions {
    display: flex;
    gap: var(--space-2);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background-color: var(--color-grey-100);
    border: none;
    color: var(--color-grey-500);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.icon-btn:hover {
    background-color: var(--color-grey-200);
    color: var(--color-grey-800);
}

.icon-btn svg {
    width: 18px;
    height: 18px;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    background-color: var(--color-grey-50);
}

.message {
    display: flex;
    gap: var(--space-3);
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.system {
    justify-content: center;
}

.message.system span {
    font-size: var(--text-xs);
    color: var(--color-grey-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-grey-300) 0%, var(--color-grey-400) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-pure-white);
    font-size: var(--text-xs);
    font-weight: 600;
    flex-shrink: 0;
}

.message-content {
    max-width: 70%;
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-xl);
    position: relative;
}

.message.candidate .message-content {
    background-color: var(--color-pure-white);
    border: 1px solid var(--color-grey-200);
    border-bottom-left-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.message.recruiter {
    flex-direction: row-reverse;
}

.message.recruiter .message-content {
    background: linear-gradient(135deg, var(--color-grey-700) 0%, var(--color-grey-800) 100%);
    color: var(--color-pure-white);
    border-bottom-right-radius: var(--radius-sm);
}

.message-content p {
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-bottom: var(--space-2);
}

.message-time {
    font-size: var(--text-xs);
    color: var(--color-grey-400);
    display: block;
    margin-top: var(--space-2);
}

.message.recruiter .message-time {
    color: rgba(255, 255, 255, 0.6);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: var(--space-1);
    padding: var(--space-2) 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: var(--color-grey-400);
    border-radius: var(--radius-full);
    animation: typingBounce 1.4s infinite ease-in-out both;
}

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

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

@keyframes typingBounce {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Chat Input */
.chat-input {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-grey-200);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background-color: var(--color-pure-white);
}

.input-action {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background-color: transparent;
    border: none;
    color: var(--color-grey-400);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.input-action:hover {
    color: var(--color-grey-700);
    background-color: var(--color-grey-100);
}

.input-action svg {
    width: 20px;
    height: 20px;
}

.message-input {
    flex: 1;
    background-color: var(--color-grey-100);
    border: 1px solid var(--color-grey-200);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    color: var(--color-grey-900);
    font-size: var(--text-sm);
    outline: none;
    transition: all var(--transition-base);
}

.message-input::placeholder {
    color: var(--color-grey-400);
}

.message-input:focus {
    border-color: var(--color-grey-400);
    background-color: var(--color-pure-white);
}

.send-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-grey-700) 0%, var(--color-grey-800) 100%);
    border: none;
    color: var(--color-pure-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.send-btn svg {
    width: 18px;
    height: 18px;
}

/* ============================================
   ANALYTICS PANEL
   ============================================ */
.analytics-panel {
    background-color: var(--color-pure-white);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-grey-200);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    overflow-y: auto;
    box-shadow: var(--shadow-sm);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-grey-200);
}

.panel-header h2 {
    font-family: var(--font-serif);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-grey-900);
}

.score-badge {
    background: linear-gradient(135deg, var(--color-grey-700) 0%, var(--color-grey-800) 100%);
    color: var(--color-pure-white);
    font-size: var(--text-lg);
    font-weight: 700;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-lg);
}

/* Score Breakdown */
.score-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.score-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.score-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.score-label span:first-child {
    font-size: var(--text-sm);
    color: var(--color-grey-500);
}

.score-value {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-grey-900);
}

.score-bar {
    height: 6px;
    background-color: var(--color-grey-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.score-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-grey-600) 0%, var(--color-grey-700) 100%);
    border-radius: var(--radius-full);
    transition: width 1s ease-out;
}

/* Insights Section */
.insights-section h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-grey-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.insight-card {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-grey-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
    border-left: 3px solid transparent;
    transition: all var(--transition-base);
}

.insight-card:hover {
    transform: translateX(4px);
}

.insight-card.positive {
    border-left-color: var(--color-grey-600);
}

.insight-card.neutral {
    border-left-color: var(--color-grey-400);
}

.insight-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.insight-card.positive .insight-icon {
    background-color: var(--color-grey-200);
    color: var(--color-grey-700);
}

.insight-card.neutral .insight-icon {
    background-color: var(--color-grey-100);
    color: var(--color-grey-500);
}

.insight-icon svg {
    width: 16px;
    height: 16px;
}

.insight-content {
    flex: 1;
}

.insight-title {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-grey-900);
    margin-bottom: var(--space-1);
}

.insight-content p {
    font-size: var(--text-xs);
    color: var(--color-grey-500);
    line-height: 1.5;
}

/* Transcript Section */
.transcript-section h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-grey-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.transcript-content {
    background-color: var(--color-grey-50);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.transcript-content p {
    font-size: var(--text-xs);
    color: var(--color-grey-500);
    line-height: 1.6;
    margin-bottom: var(--space-3);
}

.transcript-content p:last-child {
    margin-bottom: 0;
}

.transcript-content strong {
    color: var(--color-grey-700);
    font-weight: 500;
}

/* Panel Actions */
.panel-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: auto;
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-grey-200);
}

.panel-actions .btn {
    justify-content: center;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-grey-100);
}

::-webkit-scrollbar-thumb {
    background: var(--color-grey-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-grey-400);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-panel {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header {
        padding: 0 var(--space-4);
    }
    
    .content-grid {
        padding: var(--space-4);
    }
}