/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - Light Theme with Orange Accents */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #fff5f0;
    --accent-primary: #6b7280;
    --accent-secondary: #9ca3af;
    --accent-gradient: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 20px rgba(107, 114, 128, 0.15);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --top-bar-height: 60px;
    --bottom-nav-height: 70px;
    --fab-size: 56px;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

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

/* ===== TOP BAR ===== */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--top-bar-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--spacing-lg);
}

.app-title {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-glow);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    margin-top: var(--top-bar-height);
    margin-bottom: var(--bottom-nav-height);
    padding: var(--spacing-lg);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* ===== MODULES ===== */
.module {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.module.active {
    display: block;
}

.module-header {
    margin-bottom: var(--spacing-lg);
}

.module-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

/* ===== METRICS GRID ===== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.metric-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.metric-card:active {
    transform: scale(0.98);
}

.metric-card:active::before {
    opacity: 1;
}

.metric-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== SECTION TITLE ===== */
.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* ===== SEARCH BAR ===== */
.search-bar {
    margin-bottom: var(--spacing-lg);
}

.search-bar input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-normal);
    min-height: 48px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-bar input::placeholder {
    color: var(--text-muted);
}

/* ===== FILTER CHIPS ===== */
.filter-chips {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: var(--spacing-xs);
}

.filter-chips::-webkit-scrollbar {
    display: none;
}

.chip {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 44px;
    font-family: inherit;
}

.chip:active {
    transform: scale(0.95);
}

.chip.active {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

/* ===== CARD LIST ===== */
.card-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-badge {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.card-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-icon {
    font-size: 1rem;
}

/* ===== ACTIVITY FEED ===== */
.activity-feed,
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.activity-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
}

.activity-item:active {
    transform: scale(0.98);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.activity-details {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.activity-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.activity-checkbox {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--glass-border);
    cursor: pointer;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    margin-top: 0.5rem;
}

.activity-checkbox.checked {
    background: var(--accent-gradient);
    border-color: transparent;
}

/* ===== PIPELINE ===== */
/* Mobile-first: Vertical accordion layout */
.pipeline-stages {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.pipeline-stage {
    width: 100%;
}

.stage-header {
    background: var(--accent-gradient);
    backdrop-filter: blur(20px);
    border: none;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    min-height: 48px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-md);
}

.stage-header:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
}

.stage-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stage-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    text-align: center;
}

.stage-toggle {
    font-size: 1.25rem;
    transition: transform var(--transition-normal);
    color: var(--text-primary);
}

.stage-toggle.expanded {
    transform: rotate(180deg);
}

.stage-count {
    font-size: 0.875rem;
    color: var(--text-primary);
    opacity: 0.9;
    text-align: center;
}

.stage-cards {
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    animation: slideDown var(--transition-normal);
}

.stage-cards.expanded {
    display: flex;
}

.pipeline-card {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.pipeline-card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-md);
}

.pipeline-card-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
    text-align: center;
}

.pipeline-card-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--success);
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.pipeline-card-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Desktop: Horizontal scrolling layout */
@media (min-width: 768px) {
    .pipeline-stages {
        flex-direction: row;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: var(--spacing-md);
        scroll-snap-type: x mandatory;
    }

    .pipeline-stages::-webkit-scrollbar {
        display: none;
    }

    .pipeline-stage {
        min-width: 320px;
        flex-shrink: 0;
        scroll-snap-align: start;
    }

    .stage-header {
        cursor: default;
        text-align: center;
        margin-bottom: var(--spacing-md);
    }

    .stage-header:active {
        transform: none;
        background: var(--glass-bg);
    }

    .stage-header-top {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .stage-toggle {
        display: none;
    }

    .stage-cards {
        display: flex !important;
        max-height: 60vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        margin-top: 0;
    }

    .pipeline-card {
        cursor: grab;
    }

    .pipeline-card:active {
        cursor: grabbing;
        opacity: 0.8;
    }
}

/* ===== BOTTOM NAVIGATION ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    flex: 1;
    padding: var(--spacing-xs);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-normal);
    border-radius: var(--radius-md);
    min-height: 48px;
    font-family: inherit;
}

.nav-item:active {
    transform: scale(0.95);
}

.nav-item.active {
    color: var(--accent-primary);
}

.nav-icon {
    font-size: 1.5rem;
}

.nav-label {
    font-size: 0.625rem;
    font-weight: 500;
}

/* ===== FLOATING ACTION BUTTON ===== */
.fab {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-lg));
    right: var(--spacing-lg);
    width: var(--fab-size);
    height: var(--fab-size);
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    border: none;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    cursor: pointer;
    z-index: 99;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.fab:active {
    transform: scale(0.9);
}

.fab-icon {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 300;
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
}

.modal.active {
    display: block;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    animation: fadeIn var(--transition-normal);
}

.modal-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--spacing-xl);
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp var(--transition-normal);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.modal-close:active {
    transform: scale(0.9);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-normal);
    min-height: 48px;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-button {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-height: 48px;
    font-family: inherit;
    box-shadow: var(--shadow-glow);
}

.form-button:active {
    transform: scale(0.98);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }

    to {
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

/* ===== RESPONSIVE (TABLET & DESKTOP) ===== */
@media (min-width: 768px) {
    .metrics-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .pipeline-stage {
        min-width: 320px;
    }

    .modal-content {
        left: 50%;
        right: auto;
        bottom: auto;
        top: 50%;
        transform: translate(-50%, -50%);
        border-radius: var(--radius-xl);
        max-width: 500px;
        animation: scaleIn var(--transition-normal);
    }

    @keyframes scaleIn {
        from {
            transform: translate(-50%, -50%) scale(0.9);
            opacity: 0;
        }

        to {
            transform: translate(-50%, -50%) scale(1);
            opacity: 1;
        }
    }
}

@media (min-width: 1024px) {
    :root {
        --bottom-nav-height: 0px;
    }

    .bottom-nav {
        display: none;
    }

    .app-container {
        flex-direction: row;
    }

    .sidebar {
        display: flex;
        flex-direction: column;
        width: 280px;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        border-right: 1px solid var(--glass-border);
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
    }

    .main-content {
        margin-bottom: 0;
        max-width: 1400px;
        margin-left: auto;
        margin-right: auto;
    }

    .fab {
        bottom: var(--spacing-xl);
    }
}