/* --- PlanAnalyzer Design System V2 ---
   Minimalist Apple Style | Professional & Modern Architectural Analysis
*/

:root {
    /* Color Palette */
    --bg-primary: #F5F5F7;        /* Neutral Light background */
    --bg-secondary: #FFFFFF;      /* Pure white for panels */
    --border-color: #E5E5EA;       /* Light border */
    --border-hover: #A1A1A6;       /* Accent border on hover */
    
    --color-primary: #000000;      /* Dark text / Primary button black */
    --color-secondary: #A1A1A6;    /* Secondary grey */
    --color-success: #34C759;      /* Apple Success Green */
    --color-warning: #FF9500;      /* Apple Warning Orange */
    --color-error: #FF3B30;        /* Apple Error Red */
    --color-neutral: #E5E5EA;      /* Light neutral grey */
    
    --text-primary: #1D1D1F;       /* Apple primary dark text */
    --text-secondary: #86868B;     /* Apple secondary grey text */
    --text-muted: #A1A1A6;         /* Apple tertiary light text */
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Disable glow decorations */
.background-decor {
    display: none !important;
}

/* Glass panel styled as clean minimalist Apple cards */
.glass {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Typography Scale */
h1 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
    font-size: 48px;
    font-weight: 200; /* Thin */
    letter-spacing: -1px;
    color: var(--text-primary);
}

h2 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
    font-size: 36px;
    font-weight: 400; /* Regular */
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

h3 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
    font-size: 24px;
    font-weight: 500; /* Medium */
    color: var(--text-primary);
}

h4 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
    font-size: 16px;
    font-weight: 600;
}

p {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 400;
}

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

.hidden {
    display: none !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 9999px; /* Pure Pill shapes */
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: none;
    outline: none;
}

/* Primary: Solid Black */
.btn-primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #2D2D2F;
    transform: translateY(-1px);
}

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

/* Secondary: White with light border */
.btn-secondary {
    background-color: #FFFFFF;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: #F5F5F7;
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

/* Outline: Minimal border */
.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background-color: rgba(0, 0, 0, 0.03);
    border-color: var(--border-hover);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Destructive / Error State Button */
.btn-destructive {
    background-color: #FFECEB;
    border: 1px solid #FFC5C2;
    color: var(--color-error);
}

.btn-destructive:hover {
    background-color: #FFDFDD;
    transform: translateY(-1px);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(52, 199, 89, 0.12);
    color: #24b249;
    border: 1px solid rgba(52, 199, 89, 0.2);
}

/* Screens management */
.screen {
    display: none;
    width: 100%;
    min-height: 100vh;
    padding: 40px 20px;
    z-index: 1;
}

.screen.active {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.4s ease-out forwards;
}

/* Login Card styling */
.login-card {
    width: 100%;
    max-width: 420px;
    padding: 40px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 8px;
}

.logo h1, .logo-small h2 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #000000;
    letter-spacing: -0.8px;
}

.logo h1 span, .logo-small h2 span {
    font-weight: 300;
    color: var(--text-secondary);
}

/* Input groups */
.input-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-group input {
    width: 100%;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: #000000;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.password-wrapper {
    position: relative;
    width: 100%;
}

.password-wrapper input {
    padding-right: 48px;
}

.password-wrapper button {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 4px;
    display: flex;
    align-items: center;
}

.password-wrapper button:hover {
    color: var(--text-primary);
}

.error-message {
    background: #FFECEB;
    color: var(--color-error);
    border: 1px solid rgba(255, 59, 48, 0.2);
    padding: 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Dashboard screen specific styles */
#dashboard-screen.screen.active {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Navbar */
.navbar {
    width: 100%;
    margin-top: 15px;
    padding: 15px 30px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
}

.logo-small h2 {
    font-size: 1.5rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    background: #F5F5F7;
    padding: 6px 14px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

/* Container spacing */
.container {
    width: 100%;
    flex-grow: 1;
    margin-top: 30px;
    display: flex;
    flex-direction: column;
}

.panel-section {
    display: none;
    width: 100%;
    animation: fadeIn 0.3s ease-out forwards;
}

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

/* Upload panel styling */
.upload-container {
    padding: 60px 40px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.panel-header h1 {
    font-size: 36px;
    font-weight: 300;
    margin-bottom: 12px;
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

.drop-zone {
    border: 2px dashed #D2D2D7;
    background: #FFFFFF;
    border-radius: var(--border-radius-md);
    padding: 60px 20px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--color-primary);
    background: #F5F5F7;
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    background: #F5F5F7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    transition: all 0.2s ease;
}

.icon-wrapper i {
    font-size: 2.8rem;
    color: var(--text-secondary);
}

.drop-zone:hover .icon-wrapper {
    transform: scale(1.05);
    background: #E5E5EA;
}

.drop-zone h3 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
}

.drop-zone p {
    color: var(--text-secondary);
}

.file-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Loading screen styling */
.loading-container {
    padding: 80px 40px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.loader-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.spinner {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid #E5E5EA;
    border-top-color: #000000;
    border-radius: 50%;
    animation: rotate 1.2s linear infinite;
}

.spinner-inner {
    display: none; /* Keep it clean and Apple-minimalist */
}

.loader-icon {
    font-size: 1.8rem;
    color: var(--text-secondary);
    animation: pulse 1.5s ease-in-out infinite;
}

.loading-status {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
}

/* Steps progress indicators */
.steps-progress {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 600px;
    margin-top: 40px;
    position: relative;
}

.steps-progress::before {
    content: "";
    position: absolute;
    top: 21px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: var(--border-color);
    z-index: 1;
}

.step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    z-index: 2;
    position: relative;
}

.step-dot {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #FFFFFF;
    border: 2px solid var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.step-dot i {
    display: none;
    font-size: 0.9rem;
}

.step span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.step.active .step-dot {
    border-color: #000000;
    color: #FFFFFF;
    background: #000000;
}

.step.active span {
    color: var(--text-primary);
    font-weight: 600;
}

.step.completed .step-dot {
    border-color: var(--color-success);
    background: var(--color-success);
    color: #FFFFFF;
}

.step.completed .step-dot i {
    display: block;
}

.step.completed span {
    color: var(--color-success);
}

/* Results panel styling */
.results-header-actions {
    margin-bottom: 20px;
}

.results-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 30px;
    min-height: 600px;
}

.results-sidebar {
    padding: 30px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    gap: 25px;
    height: fit-content;
}

.file-info-badge {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #F5F5F7;
    padding: 16px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
}

.file-info-badge i {
    font-size: 2rem;
    color: var(--color-error);
}

.file-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.file-name-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.file-size-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 8px;
    text-align: center;
    background: #F5F5F7;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
}

.stat-val {
    color: var(--color-primary);
    font-size: 1.45rem;
    font-weight: 700;
}

.stat-card.shower .stat-val {
    color: #198754;
}

.stat-card.toilet .stat-val {
    color: #D100A7;
}

.stat-card.duct .stat-val {
    color: #0066CC;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.72rem;
    line-height: 1.25;
}

/* Design System v2 Feedback State Card Component */
.feedback-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.feedback-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.feedback-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feedback-header i {
    font-size: 1.25rem;
}

.feedback-header h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.feedback-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.feedback-progress-bar {
    width: 100%;
    height: 6px;
    background: #E5E5EA;
    border-radius: 99px;
    overflow: hidden;
    margin-top: 4px;
}

.feedback-progress-fill {
    height: 100%;
    border-radius: 99px;
    transition: width 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Success Card Variants */
.feedback-card.success {
    border-left: 4px solid var(--color-success);
}
.feedback-card.success .feedback-header {
    color: var(--color-success);
}
.feedback-card.success .feedback-progress-fill {
    background-color: var(--color-success);
}

/* Warning Card Variants */
.feedback-card.warning {
    border-left: 4px solid var(--color-warning);
}
.feedback-card.warning .feedback-header {
    color: var(--color-warning);
}
.feedback-card.warning .feedback-progress-fill {
    background-color: var(--color-warning);
}

/* Error Card Variants */
.feedback-card.error {
    border-left: 4px solid var(--color-error);
}
.feedback-card.error .feedback-header {
    color: var(--color-error);
}
.feedback-card.error .feedback-progress-fill {
    background-color: var(--color-error);
}

/* Page Breakdown */
.page-breakdown {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.page-breakdown h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.breakdown-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    padding-right: 5px;
}

.breakdown-list::-webkit-scrollbar {
    width: 6px;
}

.breakdown-list::-webkit-scrollbar-thumb {
    background: #E5E5EA;
    border-radius: 10px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: #F5F5F7;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.breakdown-page-num {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.breakdown-counts {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 10px;
    font-size: 0.8rem;
}

.count-badge {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.count-badge.sdb {
    color: var(--text-primary);
}

.count-badge.bathtub {
    color: var(--color-primary);
}

.count-badge.shower {
    color: #198754;
}

.count-badge.toilet {
    color: #D100A7;
}

.count-badge.duct {
    color: #0066CC;
}

.actions-group {
    margin-top: 10px;
}

/* PDF Preview container styling */
.preview-panel {
    display: flex;
    flex-direction: column;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.preview-header {
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #FFFFFF;
}

.preview-header h3 {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.preview-content {
    flex-grow: 1;
    height: 600px;
    background: #F5F5F7;
}

#pdf-preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
}

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

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.03); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .results-sidebar {
        height: auto;
    }
}

@media (max-width: 640px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
        text-align: center;
    }
    
    .logo-small {
        display: flex;
        justify-content: center;
    }
    
    .user-menu {
        flex-direction: column;
        gap: 10px;
    }
    
    .steps-progress {
        display: none;
    }
}