:root {
    /* New Renaissance Palette - Warm, Optimistic, Grounded */
    --bg-primary: #0f1419;
    --bg-secondary: #1a2332;
    --bg-tertiary: #253345;
    --bg-elevated: #2d4159;
    
    /* Text Colors - Warm whites, not cold */
    --text-primary: #fef6e4;
    --text-secondary: #c5b8a5;
    --text-tertiary: #8d8070;
    
    /* Stream Colors - Renaissance inspired, warm and achievable */
    --finance: #d4af37; /* Rich gold - achievement, value */
    --health: #e07a5f; /* Warm terracotta - vitality, earth */
    --career: #4a7c9e; /* Deep teal - wisdom, growth */
    --ai: #9381ff; /* Soft purple - creativity, future */
    --creative: #f2a65a; /* Warm amber - inspiration, energy */
    --fitness: #81b29a; /* Living green - health, organic growth */
    --learning: #6b9bd1; /* Sky blue - knowledge, clarity */
    --leisure: #ff6b9d; /* Soft pink - joy, play */
    --travel: #ffd93d; /* Golden yellow - adventure, sunshine */
    
    /* Accent Colors - Sunrise gradient */
    --accent-primary: #f2a65a; /* Warm amber */
    --accent-secondary: #e07a5f; /* Terracotta */
    --accent-gradient: linear-gradient(135deg, #f2a65a 0%, #e07a5f 100%);
    
    /* Status Colors - Honest and clear */
    --status-optimal: #81b29a;
    --status-attention: #f2a65a;
    --status-urgent: #e07a5f;
    
    /* UI Elements */
    --border: rgba(197, 184, 165, 0.15);
    --border-focus: rgba(242, 166, 90, 0.4);
    --shadow-soft: rgba(0, 0, 0, 0.3);
    --shadow-elevated: rgba(0, 0, 0, 0.5);
    --glow-warm: rgba(242, 166, 90, 0.2);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'SF Pro Display', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: 16px;
    letter-spacing: 0.01em;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header - Operations Command */
.header {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px var(--shadow-soft);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    position: relative;
}

.logo::after {
    content: 'NETWORK OPERATIONS CENTRE';
    position: absolute;
    bottom: -0.75rem;
    left: 0;
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--text-tertiary);
    font-weight: 400;
    background: none;
    -webkit-text-fill-color: var(--text-tertiary);
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.system-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 20px;
    border: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--status-optimal);
    box-shadow: 0 0 10px var(--status-optimal);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.btn-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 2px solid var(--border);
    background: var(--bg-elevated);
    color: var(--accent-primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.btn-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-icon .icon {
    position: relative;
    z-index: 1;
}

.btn-icon:hover {
    transform: translateY(-2px);
    border-color: var(--accent-primary);
    box-shadow: 0 4px 16px var(--glow-warm);
}

.btn-icon:hover::before {
    opacity: 0.15;
}

.btn-icon:active {
    transform: translateY(0);
}

/* Timeline Navigation - Mission Timeline Selector */
.timeline-nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.timeline-nav::-webkit-scrollbar {
    display: none;
}

.timeline-btn {
    padding: 0.65rem 1.5rem;
    border: 1.5px solid var(--border);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 24px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.timeline-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.timeline-btn:hover::before {
    opacity: 0.1;
}

.timeline-btn.active {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    border-color: transparent;
    font-weight: 600;
    box-shadow: 0 4px 12px var(--glow-warm);
}

.timeline-btn.active::before {
    opacity: 1;
}

/* Main Content - Operations Display */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    width: 100%;
}

/* Operations Summary */
.ops-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border);
}

.ops-stat {
    text-align: center;
}

.ops-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.ops-stat-label {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* Streams Container - Monitoring Grid */
.streams-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
    animation: fadeIn 0.5s ease;
}

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

/* Stream Card - Monitoring Panel */
.stream-card {
    background: var(--bg-secondary);
    border-radius: 20px;
    padding: 1.75rem;
    border: 1.5px solid var(--border);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stream-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--stream-color);
    opacity: 0.6;
}

.stream-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, var(--stream-color), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.stream-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--shadow-elevated);
    border-color: var(--stream-color);
}

.stream-card:hover::after {
    opacity: 0.08;
}

.stream-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.stream-icon {
    font-size: 1.75rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.stream-title {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.stream-count {
    margin-left: auto;
    background: var(--bg-elevated);
    padding: 0.35rem 0.9rem;
    border-radius: 14px;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
    border: 1px solid var(--border);
}

.stream-progress {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 1.25rem;
}

.stream-progress-bar {
    height: 100%;
    background: var(--stream-color);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px var(--stream-color);
}

.goals-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.goal-item {
    background: var(--bg-tertiary);
    padding: 1.1rem 1.25rem;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    position: relative;
}

.goal-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--stream-color);
    transition: height 0.3s ease;
}

.goal-item:hover {
    background: var(--bg-elevated);
    border-color: var(--stream-color);
    transform: translateX(4px);
}

.goal-item:hover::before {
    height: 60%;
}

.goal-title {
    font-weight: 500;
    margin-bottom: 0.65rem;
    line-height: 1.4;
}

.goal-meta {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.goal-tag {
    padding: 0.3rem 0.7rem;
    border-radius: 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    font-weight: 500;
}

/* Empty State - Invitation to Begin */
.empty-state {
    text-align: center;
    padding: 5rem 2rem;
    animation: fadeIn 0.5s ease;
}

.empty-state.hidden {
    display: none;
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.empty-state h2 {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.empty-subtitle {
    font-size: 1.15rem !important;
    margin-bottom: 2.5rem !important;
    color: var(--text-primary) !important;
    font-weight: 500;
}

/* Buttons - Action Elements */
.btn-primary, .btn-secondary, .btn-ai {
    padding: 0.85rem 1.75rem;
    border-radius: 14px;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    letter-spacing: 0.02em;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
    box-shadow: 0 4px 12px var(--glow-warm);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow-warm);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1.5px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-elevated);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

.btn-ai {
    background: linear-gradient(135deg, var(--ai) 0%, var(--creative) 100%);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(147, 129, 255, 0.3);
}

.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(147, 129, 255, 0.4);
}

.btn-ai::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-ai:hover::before {
    opacity: 1;
}

/* Modal - Dialog Interface */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 20, 25, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 24px;
    max-width: 640px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1.5px solid var(--border);
    box-shadow: 0 20px 60px var(--shadow-elevated);
}

@keyframes modalSlideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 2rem 2rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-close {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 1.75rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: all 0.2s ease;
    line-height: 1;
}

.btn-close:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--accent-primary);
}

.modal-body {
    padding: 2rem;
}

/* Form Elements - Input Controls */
.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.65rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1.1rem;
    background: var(--bg-tertiary);
    border: 1.5px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-elevated);
    box-shadow: 0 0 0 4px var(--glow-warm);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
    flex-wrap: wrap;
}

.form-actions button {
    flex: 1;
    min-width: 140px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem 1.5rem;
    }
    
    .logo {
        font-size: 1.4rem;
    }
    
    .logo::after {
        font-size: 0.55rem;
        bottom: -0.65rem;
    }
    
    .system-status {
        display: none; /* Hide on mobile to save space */
    }
    
    .timeline-nav {
        padding: 0.75rem 1.5rem;
    }
    
    .timeline-btn {
        font-size: 0.9rem;
        padding: 0.55rem 1.2rem;
    }
    
    .main-content {
        padding: 1.5rem 1rem;
    }
    
    .ops-summary {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.25rem;
    }
    
    .ops-stat-value {
        font-size: 2rem;
    }
    
    .streams-container {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
    }
    
    .modal-content {
        border-radius: 20px;
    }
    
    .modal-header {
        padding: 1.5rem;
    }
    
    .modal-header h2 {
        font-size: 1.5rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
}

/* Stream-specific colors */
.stream-card[data-stream="finance"] { --stream-color: var(--finance); }
.stream-card[data-stream="health"] { --stream-color: var(--health); }
.stream-card[data-stream="career"] { --stream-color: var(--career); }
.stream-card[data-stream="ai"] { --stream-color: var(--ai); }
.stream-card[data-stream="creative"] { --stream-color: var(--creative); }
.stream-card[data-stream="fitness"] { --stream-color: var(--fitness); }
.stream-card[data-stream="learning"] { --stream-color: var(--learning); }
.stream-card[data-stream="leisure"] { --stream-color: var(--leisure); }
.stream-card[data-stream="travel"] { --stream-color: var(--travel); }

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Goal Detail Styles */
.goal-detail {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.detail-section {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
}

.detail-section h3 {
    margin-bottom: 1rem;
    color: var(--accent);
    font-size: 1.1rem;
}

.detail-section p {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.detail-section p:last-child {
    margin-bottom: 0;
}

.text-muted {
    color: var(--text-secondary);
    font-style: italic;
}

.subtasks-list {
    list-style: none;
    padding: 0;
}

.subtasks-list li {
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border-left: 3px solid var(--accent);
}

.subtasks-list li:last-child {
    margin-bottom: 0;
}

.detail-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.detail-actions button {
    flex: 1;
    min-width: 120px;
}

/* Notification Animations */
@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

/* AI Breakdown Modal Styles */
.breakdown-result {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.breakdown-goal-info {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.breakdown-goal-info h3 {
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.breakdown-section {
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border-left: 3px solid var(--accent);
}

.breakdown-section.highlight {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(139, 92, 246, 0.1));
    border-left-color: var(--ai);
    border-left-width: 4px;
}

.breakdown-section h3 {
    margin-bottom: 1rem;
    color: var(--accent);
    font-size: 1.1rem;
}

.first-action {
    font-size: 1.1rem;
    line-height: 1.7;
    font-weight: 500;
    color: var(--text-primary);
}

.breakdown-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.breakdown-list li {
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    line-height: 1.6;
    border-left: 2px solid var(--accent);
    padding-left: 1rem;
}

.breakdown-list li:last-child {
    margin-bottom: 0;
}

.breakdown-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.breakdown-actions button {
    flex: 1;
    min-width: 150px;
}