@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

/* ========================================
   KCC PORTAL THEME
   Modern Dark/Light Mode with Glassmorphism
======================================== */

:root {
    /* Light Mode Colors - Portal Style */
    --bg-gradient-start: #F1F1F1;
    --bg-gradient-end: #F1F1F1;
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-border: rgba(204, 204, 204, 0.3);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --card-glow: none;

    /* Primary Accent - Deep Navy */
    --accent-primary: #0C0E37;
    --accent-primary-hover: #10134E;
    --accent-secondary: #EB0000;

    /* Cooling/Heating */
    --cooling-color: #3b82f6;
    --cooling-bg: rgba(59, 130, 246, 0.1);
    --cooling-gradient: linear-gradient(135deg, #3b82f6 0%, #0ea5e9 100%);
    --heating-color: #EB0000;
    --heating-bg: rgba(235, 0, 0, 0.1);
    --heating-gradient: linear-gradient(135deg, #EB0000 0%, #ff3333 100%);

    /* Status Colors */
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;

    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #f1f5f9;

    /* UI Elements */
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-focus-ring: rgba(12, 14, 55, 0.3);
    --table-header-bg: #f1f5f9;
    --table-row-hover: rgba(12, 14, 55, 0.05);

    /* Glassmorphism */
    --glass-blur: blur(16px);
    --glass-saturate: saturate(180%);

    /* Section Headers - Deep Navy */
    --section-header-bg: linear-gradient(135deg, #0C0E37 0%, #1a1d4d 100%);
    --section-header-text: #ffffff;

    /* Navigation */
    --nav-bg: rgba(255, 255, 255, 0.9);
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);

    /* Existing Portal Colors */
    --primary-blue: #0C0E37;
    --primary-red: #EB0000;
    --menu-bg: #0C0E37;
    --hamburger-menu: #10134E;
    --primary-grey: #666666;
    --primary-black: #222222;
    --primary-white: #FFFFFF;
    --background-color: #F1F1F1;
    --primary-border-color: #CCCCCC;
    --secondary-border-color: #8E8E8E;

    /* Avatar */
    --avatar-bg: #FFDBDB;
    --avatar-text: #C54242;

    /* Typography - Roboto (Portal Standard) */
    --default-font: 'Roboto', sans-serif;
    --font-medium: 'Roboto', sans-serif;
    --font-bold: 'Roboto', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --value_8: 8px;
    --value_12: 12px;
    --value_14: 14px;
    --value_16: 16px;
    --value_20: 20px;

    /* Header height */
    --header-height: 57px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #1e293b;
    --card-bg: rgba(30, 41, 59, 0.85);
    --card-border: rgba(71, 85, 105, 0.3);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --card-glow: 0 0 40px rgba(59, 79, 189, 0.1);

    /* Primary Accent - Brighter navy for dark mode */
    --accent-primary: #3b4fbd;
    --accent-primary-hover: #0C0E37;

    /* Cooling/Heating - Brighter */
    --cooling-color: #60a5fa;
    --cooling-bg: rgba(96, 165, 250, 0.15);
    --heating-color: #ff4444;
    --heating-bg: rgba(255, 68, 68, 0.15);

    /* Status Colors - Brighter */
    --success-color: #34d399;
    --error-color: #f87171;
    --warning-color: #fbbf24;

    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    /* UI Elements */
    --input-bg: rgba(51, 65, 85, 0.5);
    --input-border: #475569;
    --input-focus-ring: rgba(59, 79, 189, 0.4);
    --table-header-bg: rgba(51, 65, 85, 0.6);
    --table-row-hover: rgba(59, 79, 189, 0.08);

    /* Section Headers - Navy gradient for dark mode */
    --section-header-bg: linear-gradient(135deg, #1a1d4d 0%, #0C0E37 100%);
    --section-header-text: #ffffff;

    /* Navigation */
    --nav-bg: rgba(15, 23, 42, 0.95);
    --nav-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Portal overrides for dark mode */
    --background-color: #0f172a;
    --primary-border-color: #334155;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--default-font);
    margin: 0;
    padding: 0;
    background: var(--background-color);
    color: var(--text-primary);
    transition: background var(--transition-normal), color var(--transition-normal);
}

/* ========== ERV CALCULATOR SPECIFIC STYLES ========== */

/* Floating Navigation Bar */
.erv-floating-nav {
    position: sticky;
    top: 65px;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: var(--glass-blur) var(--glass-saturate);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 8px 16px;
    margin-bottom: 16px;
    box-shadow: var(--nav-shadow);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: all var(--transition-normal);
}

.erv-nav-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.erv-nav-title svg {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
}

.erv-nav-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    max-width: 300px;
}

.erv-progress-bar {
    flex: 1;
    height: 8px;
    background: var(--input-border);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.erv-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--success-color));
    border-radius: 4px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.erv-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.erv-progress-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.erv-nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.theme-toggle .sun-icon {
    display: none;
}

.theme-toggle .moon-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: none;
}

/* Quick Export Button */
.quick-export-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--accent-primary);
    background: transparent;
    color: var(--accent-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quick-export-btn:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.05);
}

.quick-export-btn svg {
    width: 14px;
    height: 14px;
}

/* Nav Action Buttons (Calculate, Save) */
.nav-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-transform: none;
    letter-spacing: 0.02em;
}

/* Calculate Button - Primary Navy */
.calculate-btn {
    background: linear-gradient(135deg, #0C0E37 0%, #1a1d4d 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(12, 14, 55, 0.3);
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(12, 14, 55, 0.4);
}

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

/* Save Button - Success Green */
.save-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
}

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

/* Responsive adjustments for nav buttons */
@media (max-width: 768px) {
    .nav-action-btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}

/* ========== GLASSMORPHISM CARDS ========== */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur) var(--glass-saturate);
    -webkit-backdrop-filter: var(--glass-blur) var(--glass-saturate);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.glass-card:hover {
    box-shadow: var(--card-shadow), var(--card-glow);
    transform: translateY(-2px);
}

/* Section Headers with Gradient */
.glass-section-header {
    background: var(--section-header-bg);
    padding: 10px 14px;
    border-bottom: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.glass-section-header .section-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
}

.glass-section-header .section-icon svg {
    width: 16px;
    height: 16px;
    color: #ffffff;
}

.glass-section-header h2 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--section-header-text);
    letter-spacing: 0.02em;
}

.glass-card-body {
    padding: 14px;
}

/* ========== ANIMATED INPUT FIELDS ========== */
.modern-input-group {
    position: relative;
    margin-bottom: 10px;
}

.modern-input {
    width: 100%;
    padding: 8px 12px;
    padding-right: 40px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--default-font);
    transition: all var(--transition-fast);
    outline: none;
}

.modern-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--input-focus-ring);
}

.modern-input:valid:not(:placeholder-shown) {
    border-color: var(--success-color);
}

.modern-input.error {
    border-color: var(--error-color);
    animation: inputShake 0.4s ease;
}

@keyframes inputShake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

/* Floating Label */
.modern-input-label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 15px;
    pointer-events: none;
    transition: all var(--transition-fast);
    background: transparent;
    padding: 0 4px;
}

.modern-input:focus ~ .modern-input-label,
.modern-input:not(:placeholder-shown) ~ .modern-input-label {
    top: 0;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent-primary);
    background: var(--input-bg);
}

/* Unit Badge */
.input-unit {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    background: var(--table-header-bg);
    padding: 4px 8px;
    border-radius: 4px;
}

/* ========== COOLING/HEATING COLUMN STYLING ========== */
.cooling-column {
    position: relative;
}

.cooling-column::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--cooling-bg);
    pointer-events: none;
    border-radius: var(--radius-md);
}

.cooling-header-cell,
.heating-header-cell {
    vertical-align: middle !important;
    text-align: center !important;
    font-weight: 600 !important;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 10px !important;
    line-height: 1.4 !important;
    padding: 8px 10px !important;
    border: none !important;
    border-bottom: 1px solid var(--card-border) !important;
}

.cooling-header-cell {
    background: var(--cooling-gradient) !important;
    color: white !important;
}

.cooling-header-cell i,
.heating-header-cell i {
    vertical-align: middle;
    margin-right: 4px;
}

.heating-column {
    position: relative;
}

.heating-column::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--heating-bg);
    pointer-events: none;
    border-radius: var(--radius-md);
}

.heating-header-cell {
    background: var(--heating-gradient) !important;
    color: white !important;
}

/* ========== ENHANCED TABLE STYLES ========== */
.modern-table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
}

.modern-table th {
    background: var(--table-header-bg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
    vertical-align: middle;
}

.modern-table td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-primary);
    font-size: 13px;
    transition: background var(--transition-fast);
}

.modern-table tr:hover td {
    background: var(--table-row-hover);
}

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

/* ========== RESULT CARDS WITH ANIMATION ========== */
.result-card {
    background: var(--card-bg);
    border-radius: var(--radius-sm);
    padding: 10px;
    border: 1px solid var(--card-border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--success-color));
}

.result-card.cooling::before {
    background: var(--cooling-gradient);
}

.result-card.heating::before {
    background: var(--heating-gradient);
}

.result-card-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    font-family: var(--font-mono);
}

.result-card-label {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Flip Animation for Results */
.result-flip {
    perspective: 1000px;
}

.result-flip-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.result-flip.flipped .result-flip-inner {
    transform: rotateY(180deg);
}

/* ========== ACTION BUTTONS ========== */
.btn-primary-gradient {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, #0C0E37 0%, #1a1d4d 100%);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(12, 14, 55, 0.4);
}

.btn-primary-gradient:hover::before {
    left: 100%;
}

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

/* Loading State */
.btn-primary-gradient.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-primary-gradient.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: buttonSpin 1s linear infinite;
}

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

/* Secondary Button */
.btn-secondary-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-primary);
    background: transparent;
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-secondary-outline:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(12, 14, 55, 0.3);
}

/* ========== STAT CARDS ========== */
.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 14px;
    border: 1px solid var(--card-border);
    text-align: center;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.stat-card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0C0E37 0%, #1a1d4d 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}

.stat-card-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.stat-card-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1;
}

.stat-card-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
    font-weight: 500;
}

/* ========== FADE IN ANIMATIONS ========== */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.fade-in-up:nth-child(1) { animation-delay: 0.1s; }
.fade-in-up:nth-child(2) { animation-delay: 0.2s; }
.fade-in-up:nth-child(3) { animation-delay: 0.3s; }
.fade-in-up:nth-child(4) { animation-delay: 0.4s; }
.fade-in-up:nth-child(5) { animation-delay: 0.5s; }

/* Scale in animation for results */
.scale-in {
    opacity: 0;
    transform: scale(0.9);
    animation: scaleIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========== ERV PAGE SPECIFIC LAYOUT ========== */
.erv-page-wrapper {
    background: linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    padding: 12px;
    transition: background var(--transition-normal);
}

.erv-main-container {
    max-width: 1600px;
    margin: 0 auto;
}

.erv-page-header {
    text-align: center;
    margin-bottom: 14px;
    padding: 10px 0;
}

.erv-page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.erv-page-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Grid Layout */
.erv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 1200px) {
    .erv-grid {
        grid-template-columns: 1fr;
    }
}

.erv-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ========== FORM SELECT MODERN ========== */
.modern-select {
    width: 100%;
    padding: 8px 32px 8px 12px;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--default-font);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 8px center;
    background-repeat: no-repeat;
    background-size: 16px;
    transition: all var(--transition-fast);
    outline: none;
}

.modern-select:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--input-focus-ring);
}

.modern-select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ========== EXISTING NAVBAR STYLES ========== */
.navbar {
    padding: 13px 16px;
    box-shadow: 0px 1px 4px 0px #00000026;
    background: #fff;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
}

.navbar .header {
    padding: 0 0 0 8px;
    position: relative;
    display: flex;
    width: 100%;
    align-items: center;
}

.navbar .navbar-brand {
    margin: 0 0 0 30px;
    padding: 0;
    padding-right: 24px;
    border-right: 1px solid var(--secondary-border-color);
    display: flex;
    align-items: center;
}

.navbar .kcc_logo {
    width: 110px;
    height: 31px;
    display: block;
}

/* Hamburger Menu */
.hamburger-wrapper {
    position: relative;
    display: block;
    height: 12px;
    cursor: pointer;
}

.hamburger-wrapper:focus {
    border: none !important;
    outline: none;
}

.hamburger_menu {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--menu-bg);
    position: relative;
    top: 5px;
}

.hamburger_menu:before,
.hamburger_menu:after {
    position: absolute;
    content: '';
    height: 2px;
    width: 100%;
    left: 0;
    background: var(--menu-bg);
}

.hamburger_menu:before {
    top: -5px;
}

.hamburger_menu:after {
    top: 5px;
}

/* Navbar Right Section */
.navbar-right {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.navbar-nav {
    display: flex;
    gap: 8px;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-nav .nav-item {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--value_14);
    font-family: var(--default-font);
    color: var(--primary-grey);
    line-height: var(--value_20);
}

.navbar-nav .nav-link {
    padding: 0;
    display: flex;
    align-items: center;
}

.dropdown-toggle::after {
    display: none;
}

/* ========== USER AVATAR ========== */
.p-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--avatar-bg);
    color: var(--avatar-text);
    font-size: 12px;
    font-weight: 500;
    font-family: var(--font-bold);
    cursor: pointer;
}

/* User Dropdown */
.nav-item.dropdown {
    position: relative;
}

.navbar-nav .dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: auto;
    margin-top: 10px;
    min-width: 180px;
    padding: 15px 12px 12px;
    border: 1px solid rgba(0,0,0,.15);
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    z-index: 1050;
}

.navbar-nav .dropdown-menu:before {
    position: absolute;
    content: '';
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid #939598;
    top: -6px;
    right: 10px;
}

.navbar-nav .dropdown-menu li {
    padding: 3px 0;
    list-style: none;
}

.dropdown-menu .p-avatar-large {
    width: 72px;
    height: 72px;
    font-size: 24px;
    background: var(--avatar-bg);
    border: 3px solid #f1f2f2;
    margin: 0 auto 8px;
}

.dropdown-menu .user_name {
    color: var(--primary-black);
    font-size: 14px;
    font-weight: 500;
    display: block;
    text-align: center;
    padding: 0;
    word-break: break-all;
}

.dropdown-item {
    font-size: var(--value_12);
    font-family: var(--default-font);
    color: var(--primary-grey);
    padding: 6px 8px;
    display: block;
}

.dropdown-item:focus,
.dropdown-item:hover {
    background: #f5f5f5;
    color: var(--primary-black);
}

.dropdown-divider {
    margin: 8px 0;
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    z-index: 100;
    margin: 8px 0 44px 8px;
    border-radius: var(--value_8);
    padding: var(--value_12);
    background: var(--menu-bg);
    width: 58px;
    max-height: calc(100vh - var(--header-height) - 52px);
    overflow-y: hidden;
    overflow-x: hidden;
    transition: width 0.3s ease-in-out;
}

.sidebar.open {
    width: 175px;
}

.sidebar.open .menu_name {
    visibility: visible !important;
    opacity: 1 !important;
}

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

.sidebar .menu_item {
    margin-bottom: 1rem;
}

.sidebar .menu_item a {
    display: flex;
    align-items: center;
    gap: var(--value_8);
    text-decoration: none;
    padding: 6px;
    transition: all 0.3s ease-in-out;
    border-radius: 4px;
}

.sidebar .menu_item a:hover {
    text-decoration: none;
    background: rgba(255, 255, 255, 0.1);
}

.sidebar .menu_item i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    min-width: 22px;
    color: #ffffff;
    font-size: 16px;
    transition: all 0.3s ease-in-out;
}

.sidebar .menu_item .menu_name {
    font-size: var(--value_14);
    font-family: var(--font-medium);
    color: #ffffff;
    white-space: nowrap;
    font-weight: 500;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

.sidebar .menu_item.active a {
    background: #ffffff;
    border-radius: 4px;
}

.sidebar .menu_item.active .menu_name {
    color: var(--menu-bg) !important;
}

.sidebar .menu_item.active i {
    color: var(--menu-bg);
}

/* ========== CONTENT AREA ========== */
.content-wrapper {
    display: flex;
    flex-flow: column;
    min-height: 100vh;
}

.content {
    flex: 1 0 auto;
    margin: 0;
    padding: 8px 16px 50px 82px;
    min-height: calc(100vh - var(--header-height) - 32px);
    margin-top: var(--header-height);
    background: var(--background-color);
    transition: all 0.3s ease-in-out;
}

.content.sidebar_open {
    padding-left: 198px;
}

/* ========== FOOTER ========== */
.footer-pattern {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 111;
    width: 100%;
    height: 32px;
    font-size: var(--value_12);
    font-family: var(--default-font);
}

.footer-body {
    padding: 8px 16px;
    width: 100%;
    background: #fff;
    color: var(--primary-black);
    border-top: 1px solid var(--primary-border-color);
    height: 32px;
    line-height: var(--value_16);
    box-shadow: 0px -1px 0px rgba(204, 204, 204, 0.8);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-body .copyright_text {
    display: flex;
    align-items: center;
}

.footer-body .copyright_text span {
    padding: 0 7px;
    border-left: 1px solid var(--secondary-border-color);
}

.footer-body .copyright_text span:first-child {
    padding-left: 0;
    border-left: 0px;
}

.footer-body .company_links {
    display: flex;
    align-items: center;
}

.footer-body .company_links a {
    position: relative;
    margin: 0 8px;
    color: var(--primary-black);
    text-decoration: none;
    transition: 0.2s ease-in-out;
}

.footer-body .company_links a:last-child {
    margin-right: 2px;
}

.footer-body .company_links a:after {
    position: absolute;
    content: "";
    background: var(--secondary-border-color);
    width: 1px;
    height: 80%;
    top: 2px;
    bottom: 0;
    margin-left: 8px;
}

.footer-body .company_links a:last-child::after {
    content: none;
}

.footer-body .company_links a:hover {
    text-decoration: underline;
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar-track {
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    background-color: #F5F5F5;
}

::-webkit-scrollbar {
    height: 10px;
    width: 8px;
    background-color: #F5F5F5;
}

::-webkit-scrollbar-thumb {
    border-radius: 10px;
    -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, .3);
    background-color: #939598;
}

/* Dark mode scrollbar */
[data-theme="dark"] ::-webkit-scrollbar-track {
    background-color: #1e293b;
}

[data-theme="dark"] ::-webkit-scrollbar {
    background-color: #1e293b;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background-color: #475569;
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 2147483647;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    min-width: 320px;
    max-width: 400px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    animation: slideInRight 0.3s ease;
    pointer-events: auto;
    backdrop-filter: var(--glass-blur);
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 13px;
    opacity: 0.9;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    opacity: 0.6;
    font-size: 18px;
    padding: 0;
    line-height: 1;
}

.toast-close:hover {
    opacity: 1;
}

.toast-success {
    background: rgba(212, 237, 218, 0.95);
    border-left: 4px solid var(--success-color);
    color: #155724;
}

.toast-error {
    background: rgba(248, 215, 218, 0.95);
    border-left: 4px solid var(--error-color);
    color: #721c24;
}

.toast-warning {
    background: rgba(255, 243, 205, 0.95);
    border-left: 4px solid var(--warning-color);
    color: #856404;
}

.toast-info {
    background: rgba(209, 236, 241, 0.95);
    border-left: 4px solid var(--accent-primary);
    color: #0c5460;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========== TOOLTIPS ========== */
[data-tooltip] {
    cursor: help;
    border-bottom: 1px dotted var(--text-muted);
}

/* Tooltip element created by JavaScript - appended to body */
#customTooltip,
.custom-tooltip {
    position: fixed !important;
    display: block !important;
    background: var(--text-primary) !important;
    color: var(--text-inverse) !important;
    padding: 12px 16px !important;
    border-radius: var(--radius-md) !important;
    font-size: 13px !important;
    font-weight: 400 !important;
    white-space: normal !important;
    max-width: 350px !important;
    min-width: 200px !important;
    width: auto !important;
    z-index: 2147483647 !important;
    box-shadow: 0 8px 24px rgba(0,0,0,0.35) !important;
    text-align: left !important;
    line-height: 1.5 !important;
    pointer-events: none !important;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
    font-family: var(--default-font) !important;
    box-sizing: border-box !important;
    transform: none !important;
    overflow: visible !important;
}

#customTooltip.visible,
.custom-tooltip.visible {
    opacity: 1 !important;
    visibility: visible !important;
}

/* ========== INSTRUCTION PANEL ========== */
.instruction-panel {
    background: linear-gradient(135deg, rgba(240, 249, 255, 0.9) 0%, rgba(224, 242, 254, 0.9) 100%);
    border: 1px solid #bae6fd;
    border-radius: var(--radius-lg);
    margin-bottom: 24px;
    overflow: hidden;
    backdrop-filter: var(--glass-blur);
}

[data-theme="dark"] .instruction-panel {
    background: linear-gradient(135deg, rgba(30, 58, 95, 0.6) 0%, rgba(12, 25, 41, 0.6) 100%);
    border-color: rgba(56, 189, 248, 0.3);
}

.instruction-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    cursor: pointer;
    background: rgba(255,255,255,0.5);
    transition: background 0.2s ease;
}

[data-theme="dark"] .instruction-header {
    background: rgba(255,255,255,0.05);
}

.instruction-header:hover {
    background: rgba(255,255,255,0.8);
}

[data-theme="dark"] .instruction-header:hover {
    background: rgba(255,255,255,0.1);
}

.instruction-header span {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #0369a1;
    font-size: 15px;
}

[data-theme="dark"] .instruction-header span {
    color: #7dd3fc;
}

.instruction-header i {
    color: var(--accent-primary);
}

.instruction-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 20px;
}

.instruction-content.show {
    max-height: 500px;
    padding: 0 20px 20px 20px;
}

.instruction-content ol {
    margin: 0 0 16px 0;
    padding-left: 20px;
    color: var(--text-secondary);
}

.instruction-content ol li {
    margin-bottom: 10px;
    line-height: 1.5;
}

.instruction-content ol li strong {
    color: #0369a1;
}

[data-theme="dark"] .instruction-content ol li strong {
    color: #7dd3fc;
}

.instruction-content .tip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(254, 243, 199, 0.9);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    color: #92400e;
    margin: 0;
}

[data-theme="dark"] .instruction-content .tip {
    background: rgba(251, 191, 36, 0.15);
    color: #fbbf24;
}

.instruction-content .tip i {
    color: #f59e0b;
}

/* ========== INPUT VALIDATION STATES ========== */
.form-input.valid,
.modern-input.valid {
    border-color: var(--success-color) !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15) !important;
}

.form-input.invalid,
.modern-input.invalid {
    border-color: var(--error-color) !important;
    animation: shake 0.3s ease;
}

.form-select.valid,
.modern-select.valid {
    border-color: var(--success-color) !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15) !important;
}

.form-select.invalid,
.modern-select.invalid {
    border-color: var(--error-color) !important;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* ========== REQUIRED FIELD INDICATOR ========== */
.required-indicator::after {
    content: "*";
    color: var(--error-color);
    font-weight: bold;
    margin-left: 4px;
}

/* ========== SECTION CARDS ENHANCEMENT ========== */
.section-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: 20px;
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--card-border);
}

.section-card:hover {
    box-shadow: var(--card-shadow), var(--card-glow);
    transform: translateY(-2px);
}

/* ========== PROGRESS INDICATOR ========== */
.form-progress-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid var(--card-border);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--input-border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--success-color));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ========== CHART CONTAINER ========== */
.chart-container {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--card-border);
}

[data-theme="dark"] .chart-container canvas {
    filter: invert(0.9) hue-rotate(180deg);
}

/* ========== RESPONSIVE ADJUSTMENTS ========== */
@media (max-width: 768px) {
    .erv-floating-nav {
        flex-wrap: wrap;
        gap: 12px;
        padding: 12px 16px;
    }

    .erv-nav-progress {
        order: 3;
        width: 100%;
        max-width: none;
    }

    .erv-nav-title {
        font-size: 16px;
    }

    .erv-grid {
        grid-template-columns: 1fr;
    }

    .glass-card-body {
        padding: 16px;
    }

    .btn-primary-gradient,
    .btn-secondary-outline {
        width: 100%;
        padding: 8px 16px;
    }

    .stat-card {
        padding: 12px;
    }

    .stat-card-value {
        font-size: 20px;
    }
}

/* ========== PRINT STYLES ========== */
@media print {
    .erv-floating-nav,
    .theme-toggle,
    .quick-export-btn,
    .instruction-panel {
        display: none !important;
    }

    .glass-card {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
    }

    .erv-page-wrapper {
        background: white;
    }
}