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

:root {
    /* Brand Colors */
    --color-primary: #000000;
    --color-secondary: #262626;
    --color-accent: #E0693D;
    --color-mint: #D0EF5E;
    --color-neural: #A69CBE;
    --color-solar: #E7B31B;
    --color-dataflow: #A6C8D5;
    --color-ion: #EFB3AF;
    --color-verdant: #27584F;
    
    /* Grayscale */
    --color-white: #FFFFFF;
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #ECECEC;
    --color-gray-300: #E0E0E0;
    --color-gray-400: #BDBDBD;
    --color-gray-500: #9E9E9E;
    --color-gray-600: #757575;
    --color-gray-700: #616161;
    --color-gray-800: #424242;
    --color-gray-900: #212121;
    
    /* Typography */
    --font-primary: 'Manrope', sans-serif;
    --font-secondary: 'Sora', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: var(--font-primary);
    background: var(--color-gray-50);
    color: var(--color-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   TYPOGRAPHY
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

a:hover {
    opacity: 0.7;
}

/* ===================================
   BUTTONS
   =================================== */
.btn-primary,
.btn-secondary,
.btn-outline,
.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-gray-200);
    color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-gray-300);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary);
}

.btn-ghost:hover {
    background: var(--color-gray-100);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1.125rem 2rem;
    font-size: 1.125rem;
}

/* ===================================
   BENTO CARDS
   =================================== */
.bento-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.bento-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.bento-card-title {
    font-family: var(--font-secondary);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.bento-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
}

/* ===================================
   LOGIN PAGE
   =================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
}

.login-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 480px;
    width: 100%;
    box-shadow: var(--shadow-xl);
}

.logo-container {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo {
    height: 48px;
    width: auto;
}

.login-card h1 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    text-align: center;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.role-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.role-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.role-btn:hover {
    background: var(--color-gray-200);
}

.role-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.pin-input-container {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.pin-digit {
    width: 60px;
    height: 70px;
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.pin-digit:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

.login-form .btn-primary {
    width: 100%;
    justify-content: center;
    font-size: 1.125rem;
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.login-footer p {
    color: var(--color-gray-600);
    font-size: 0.875rem;
    margin: 0;
}

.login-footer a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===================================
   DASHBOARD LAYOUT
   =================================== */
.dashboard {
    min-height: 100vh;
    display: flex;
}

.sidebar {
    width: 280px;
    background: var(--color-white);
    border-right: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    margin-bottom: var(--spacing-xl);
}

.sidebar-logo {
    height: 40px;
    width: auto;
    margin-bottom: var(--spacing-lg);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.user-avatar {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.user-info h4 {
    font-size: 1rem;
    margin: 0;
}

.user-info p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin: 0;
}

.sidebar-nav {
    flex: 1;
}

.nav-section {
    margin-bottom: var(--spacing-lg);
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--color-gray-700);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    margin-bottom: 0.25rem;
}

.nav-item:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

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

.sidebar-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.page-header {
    margin-bottom: var(--spacing-xl);
}

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

.page-title {
    font-size: 2rem;
    margin: 0;
}

.page-description {
    color: var(--color-gray-600);
    font-size: 1rem;
    margin: 0;
}

/* ===================================
   GRID LAYOUTS
   =================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===================================
   FORMS
   =================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

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

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

/* ===================================
   TABLES
   =================================== */
.table-container {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: var(--color-gray-50);
}

.table th {
    text-align: left;
    padding: var(--spacing-md);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-200);
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.table tbody tr:hover {
    background: var(--color-gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ===================================
   BADGES
   =================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: #D0EF5E;
    color: #27584F;
}

.badge-warning {
    background: #E7B31B;
    color: #000000;
}

.badge-danger {
    background: #EFB3AF;
    color: #000000;
}

.badge-info {
    background: #A6C8D5;
    color: #000000;
}

/* ===================================
   STATS CARDS
   =================================== */
.stat-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-change {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.stat-change.positive {
    color: #27584F;
}

.stat-change.negative {
    color: #E0693D;
}

/* ===================================
   CHAT INTERFACE
   =================================== */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 400px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.chat-messages {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.chat-message {
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
}

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.chat-message.assistant .chat-avatar {
    background: var(--color-gray-200);
    color: var(--color-primary);
}

.chat-bubble {
    max-width: 70%;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--color-gray-100);
}

.chat-message.user .chat-bubble {
    background: var(--color-primary);
    color: var(--color-white);
}

.chat-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: 0.75rem var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    resize: none;
    height: 44px;
    max-height: 120px;
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ===================================
   PROPOSAL CARDS
   =================================== */
.proposal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.proposal-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.proposal-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

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

.proposal-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
}

.proposal-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.proposal-meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.proposal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.proposal-value {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-secondary);
}

/* ===================================
   MODAL
   =================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
}

.modal {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.5rem;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-gray-100);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ===================================
   PROPOSAL VIEW
   =================================== */
.proposal-view {
    max-width: 900px;
    margin: 0 auto;
}

.proposal-document {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
}

.proposal-doc-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-200);
}

.proposal-doc-logo img {
    height: 48px;
}

.proposal-doc-info {
    text-align: right;
}

.proposal-doc-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-xl);
}

.proposal-section {
    margin-bottom: var(--spacing-xl);
}

.proposal-section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-200);
}

.pricing-table {
    width: 100%;
    margin-top: var(--spacing-md);
}

.pricing-table th,
.pricing-table td {
    padding: var(--spacing-md);
    text-align: left;
}

.pricing-table th {
    background: var(--color-gray-50);
    font-weight: 600;
}

.pricing-table td {
    border-bottom: 1px solid var(--color-gray-200);
}

.pricing-total {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: right;
    padding-top: var(--spacing-md);
}

.proposal-footer-info {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-gray-200);
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.proposal-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--color-gray-200);
    }
    
    .main-content {
        padding: var(--spacing-lg);
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .page-header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .proposal-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   UTILITIES
   =================================== */
.hidden {
    display: none !important;
}

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

.text-right {
    text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }