/* -------------------------------------------------------------
   GUATETOOLS - PREMIUM DESIGN SYSTEM (VANILLA CSS)
   ------------------------------------------------------------- */

/* Variable Definitions */
:root {
    /* Fonts */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Theme Transitions */
    --theme-transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                        color 0.3s ease, 
                        border-color 0.3s ease, 
                        box-shadow 0.3s ease;
}

/* Dark Theme Variables (Default) */
.dark-theme {
    --bg-app: #090d16;
    --bg-header: #0f1624;
    --bg-sidebar: #0f1624;
    --bg-card: rgba(17, 24, 39, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-focus: #6366f1;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Accents & States */
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-primary-rgb: 99, 102, 241;
    --color-secondary: #4b5563;
    
    --color-teal: #0d9488;
    --color-teal-light: rgba(13, 148, 136, 0.15);
    --color-red: #ef4444;
    --color-red-light: rgba(239, 68, 68, 0.15);
    --color-gold: #f59e0b;
    --color-gold-light: rgba(245, 158, 11, 0.15);
    
    --card-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --card-glow: 0 0 40px -15px rgba(99, 102, 241, 0.15);
    --glass-blur: blur(16px);
}

/* Light Theme Variables */
.light-theme {
    --bg-app: #f8fafc;
    --bg-header: #ffffff;
    --bg-sidebar: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-focus: #4f46e5;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Accents & States */
    --color-primary: #4f46e5;
    --color-primary-hover: #3730a3;
    --color-primary-rgb: 79, 70, 229;
    --color-secondary: #e2e8f0;
    
    --color-teal: #0d9488;
    --color-teal-light: rgba(13, 148, 136, 0.1);
    --color-red: #dc2626;
    --color-red-light: rgba(220, 38, 38, 0.1);
    --color-gold: #d97706;
    --color-gold-light: rgba(217, 119, 6, 0.1);
    
    --card-shadow: 0 10px 25px -12px rgba(0, 0, 0, 0.08);
    --card-glow: 0 0 30px -10px rgba(79, 70, 229, 0.08);
    --glass-blur: blur(12px);
}

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

html, body {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: var(--theme-transition);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.025em;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--color-primary-hover);
}

/* App Container Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

/* -------------------------------------------------------------
   HEADER
   ------------------------------------------------------------- */
.app-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 2rem;
    transition: var(--theme-transition);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-emoji {
    font-size: 2.25rem;
}

.logo-text h1,
.logo-text .logo-title {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Theme Toggle Button */
.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--theme-transition);
}

.theme-toggle-btn:hover {
    border-color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.08);
}

.theme-toggle-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

.dark-theme .sun-icon { display: block; }
.dark-theme .moon-icon { display: none; }
.light-theme .sun-icon { display: none; }
.light-theme .moon-icon { display: block; }

/* Mobile Hamburger Button */
.mobile-menu-btn {
    display: none; /* Hidden on Desktop */
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 10px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--theme-transition);
}

.mobile-menu-btn:hover {
    border-color: var(--color-primary);
    background-color: rgba(var(--color-primary-rgb), 0.1);
}

.mobile-menu-btn svg {
    width: 1.35rem;
    height: 1.35rem;
}

.mobile-menu-btn .close-icon {
    display: none;
}

.mobile-menu-btn.active .hamburger-icon {
    display: none;
}

.mobile-menu-btn.active .close-icon {
    display: block;
}

/* Mobile Off-Canvas Drawer Backdrop */
.mobile-nav-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-nav-backdrop.open {
    display: block;
    opacity: 1;
}

/* Mobile Off-Canvas Drawer Panel */
.mobile-nav-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
}

.mobile-nav-drawer.open {
    transform: translateX(0);
}

.mobile-drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.mobile-drawer-close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.mobile-drawer-close-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.1);
}

.mobile-drawer-close-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

.mobile-drawer-body {
    padding: 1.25rem;
    flex-grow: 1;
}

.mobile-drawer-heading {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-drawer-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background-color: rgba(0, 0, 0, 0.1);
}

.mobile-drawer-contact {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

/* -------------------------------------------------------------
   WORKSPACE GRID LAYOUT
   ------------------------------------------------------------- */
.workspace-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    flex-grow: 1;
    padding: 2rem;
    gap: 2rem;
    box-sizing: border-box;
}

/* Sidebar Navigation */
.navigation-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1rem 1.25rem;
    background: none;
    border: 1px solid transparent;
    border-radius: 12px;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-tab:hover {
    color: var(--text-primary);
    background-color: rgba(var(--color-primary-rgb), 0.05);
}

.nav-tab.active {
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    box-shadow: 0 4px 15px rgba(var(--color-primary-rgb), 0.3);
}

.light-theme .nav-tab.active {
    color: #ffffff;
}

.nav-icon {
    width: 1.25rem;
    height: 1.25rem;
}

/* -------------------------------------------------------------
   PUBLICIDAD - PREMIUM AD SPOTS
   ------------------------------------------------------------- */
.ad-spot {
    background-color: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--theme-transition);
}

/* Header Banner Ad */
.header-ad {
    margin-top: 1rem;
    width: 100%;
    max-width: 1400px;
}

.ad-placeholder {
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ad-tag {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

.ad-cta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.ad-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Sidebar Box Ad */
.sidebar-ad {
    margin-top: auto;
    padding: 1.25rem;
    text-align: center;
}

.ad-heading {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.ad-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.4;
}

.ad-btn {
    display: inline-block;
    width: 100%;
    padding: 0.5rem;
    border-radius: 8px;
    background-color: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.8rem;
    transition: all 0.2s ease;
}

.ad-btn:hover {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* Inline Ad (Results card) */
.inline-ad {
    margin: 1.5rem 0 0 0;
    background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.03) 0%, rgba(var(--color-primary-rgb), 0.07) 100%);
    border-style: solid;
    border-color: rgba(var(--color-primary-rgb), 0.2);
}

.ad-placeholder-inline {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
    align-items: center;
    text-align: center;
}

.ad-link-btn {
    display: inline-block;
    padding: 0.4rem 1rem;
    background-color: var(--color-primary);
    color: #ffffff;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    transition: background-color 0.2s ease;
}

.ad-link-btn:hover {
    background-color: var(--color-primary-hover);
    color: #ffffff;
}

/* Sticky Bottom Mobile Ad */
.sticky-mobile-ad {
    display: none; /* Desktop hidden, shown in media query */
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.15);
    z-index: 999;
}

.ad-placeholder-mobile {
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    gap: 0.5rem;
    max-width: 600px;
    margin: 0 auto;
}

.ad-link-btn-mobile {
    padding: 0.35rem 0.75rem;
    background-color: var(--color-primary);
    color: #ffffff !important;
    border-radius: 6px;
    font-weight: 700;
}

/* -------------------------------------------------------------
   MAIN TOOLS CONTAINER
   ------------------------------------------------------------- */
.tools-container {
    display: flex;
    flex-direction: column;
}

.tool-section {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeIn 0.4s ease forwards;
}

.tool-section.active {
    display: flex;
}

.section-header h1,
.section-header h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    max-width: 800px;
}

/* Grid for Calculators (Inputs vs Results) */
.calculator-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 1.5rem;
    align-items: start;
}

/* Premium Card Design */
.calc-card {
    background-color: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--card-shadow), var(--card-glow);
    transition: var(--theme-transition);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-width: 0;
}

.calc-card:hover {
    border-color: rgba(var(--color-primary-rgb), 0.15);
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all 0.25s ease;
}

.light-theme .form-control {
    background-color: rgba(0, 0, 0, 0.02);
}

.form-control:focus {
    outline: none;
    border-color: var(--border-color-focus);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), 0.15);
    background-color: rgba(0, 0, 0, 0.25);
}

.light-theme .form-control:focus {
    background-color: #ffffff;
}

.input-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* Prepend Prefix Wrapper (for Currency Q) */
.input-prefix-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.95rem;
    pointer-events: none;
}

.input-prefix-wrapper .form-control {
    padding-left: 2.25rem;
}

/* Checkbox Toggle Premium Styles */
.check-group {
    margin-bottom: 1rem;
}

.check-container {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    position: relative;
    cursor: pointer;
    user-select: none;
}

.check-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: relative;
    height: 1.25rem;
    width: 1.25rem;
    background-color: rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 0.15rem;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.light-theme .checkmark {
    background-color: rgba(0,0,0,0.03);
}

.check-container:hover input ~ .checkmark {
    border-color: var(--color-primary);
}

.check-container input:checked ~ .checkmark {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 6px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.check-container input:checked ~ .checkmark:after {
    display: block;
}

.check-label-text {
    display: flex;
    flex-direction: column;
}

.check-label-text strong {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.check-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.3;
    margin-top: 0.1rem;
}

/* Buttons Configuration */
.btn-group {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.25s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(var(--color-primary-rgb), 0.25);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(var(--color-primary-rgb), 0.35);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.light-theme .btn-secondary:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

/* Results Content Area */
.results-card {
    min-height: 380px;
    display: flex;
    flex-direction: column;
}

.results-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-grow: 1;
    color: var(--text-muted);
}

.placeholder-icon {
    width: 3.5rem;
    height: 3.5rem;
    stroke: var(--text-muted);
    margin-bottom: 1.25rem;
    opacity: 0.5;
}

.results-placeholder h3 {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.results-placeholder p {
    font-size: 0.85rem;
    max-width: 280px;
    line-height: 1.5;
}

.results-content {
    animation: slideUp 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Results Summary */
.results-summary-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background-color: rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.light-theme .results-summary-header {
    background-color: rgba(0,0,0,0.01);
}

.result-total-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.result-total-value {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.result-total-value.text-teal { color: var(--color-teal); }
.result-total-value.text-indigo { color: var(--color-primary); }
.result-total-value.text-gold { color: var(--color-gold); }

.time-worked-badge {
    background-color: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.75rem;
    border-radius: 30px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.light-theme .time-worked-badge {
    background-color: rgba(0,0,0,0.03);
}

/* Detailed Tables */
.breakdown-details {
    margin-bottom: 1.5rem;
}

.breakdown-title {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.breakdown-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.breakdown-table th {
    text-align: left;
    padding: 0.6rem 0;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.breakdown-table td {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

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

.table-subtext {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.text-right { text-align: right; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.text-red { color: var(--color-red); }
.text-teal { color: var(--color-teal); }

/* Salary Metric Rows */
.salary-metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border-color);
}

.salary-metric-row:last-child {
    border-bottom: none;
}

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-info strong {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.metric-info span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.metric-val {
    font-weight: 700;
    font-size: 0.95rem;
}

.metric-val.text-red { color: var(--color-red); }

/* Info Alert Box */
.info-alert-box {
    background-color: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--color-primary);
    padding: 0.85rem 1rem;
    border-radius: 0 8px 8px 0;
    margin-top: 1rem;
}

.light-theme .info-alert-box {
    background-color: rgba(0, 0, 0, 0.01);
}

.info-alert-box h5 {
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.info-alert-box p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.info-alert-box.info-gold {
    border-left-color: var(--color-gold);
}

/* ISR Breakdown List */
.isr-bracket-details {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.isr-bracket-details h5 {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.isr-bracket-details ul {
    list-style: none;
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.isr-bracket-details li {
    display: flex;
    justify-content: space-between;
}

.isr-bracket-details span {
    font-weight: 600;
    color: var(--text-primary);
}

/* Rates Lists (Tipo de Cambio) */
.rates-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.rate-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0,0,0,0.1);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1rem;
    border-radius: 8px;
}

.light-theme .rate-item {
    background-color: #ffffff;
}

.rate-currency {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.rate-currency strong {
    font-size: 0.9rem;
    display: block;
    color: var(--text-primary);
}

.rate-currency span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.rate-val {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-gold);
}

/* Action buttons at bottom of results */
.results-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.btn-share {
    background-color: #25d366; /* WhatsApp Green */
    color: #ffffff;
    font-size: 0.85rem;
}
.btn-share:hover {
    background-color: #128c7e;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
}

.btn-copy {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.85rem;
}
.btn-copy:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.light-theme .btn-copy:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

/* Disclaimer text */
.legal-disclaimer {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.4;
    margin-top: 1.25rem;
    text-align: justify;
}

/* Helper Utilities */
.hidden {
    display: none !important;
}

/* -------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------- */
.app-footer {
    background-color: var(--bg-header);
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    margin-top: 4rem;
    transition: var(--theme-transition);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-legal {
    font-size: 0.75rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.4;
}

.footer-links {
    margin-top: 0.5rem;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

.divider {
    user-select: none;
}

/* -------------------------------------------------------------
   ANIMATIONS & TRANSITIONS
   ------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* -------------------------------------------------------------
   RESPONSIVE STYLING (MEDIA QUERIES)
   ------------------------------------------------------------- */
@media (max-width: 1024px) {
    .workspace-layout {
        grid-template-columns: 240px minmax(0, 1fr);
        padding: 1.5rem;
        gap: 1.5rem;
    }
}

@media (max-width: 900px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .navigation-sidebar {
        display: none; /* Off-canvas drawer handles mobile navigation cleanly */
    }

    .workspace-layout {
        grid-template-columns: minmax(0, 1fr); /* Single column for content */
        padding: 1rem;
        gap: 1.25rem;
        width: 100%;
        max-width: 100vw;
        box-sizing: border-box;
    }
    
    .tools-container {
        min-width: 0;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }
}

@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: minmax(0, 1fr); /* Stack inputs and results on mobile */
    }
    
    .app-header {
        padding: 0.75rem 1rem;
    }
    
    .header-ad {
        display: none; /* Hide header ad banner on mobile to keep top bar clean */
    }
    
    .logo-emoji {
        font-size: 1.6rem;
    }
    
    .logo-text h1,
    .logo-text .logo-title {
        font-size: 1.2rem;
    }
    
    .logo-subtitle {
        font-size: 0.7rem;
    }
    
    .calc-card {
        padding: 1.25rem;
    }
    
    .results-actions {
        grid-template-columns: 1fr; /* Stack sharing buttons */
    }
    
    .breakdown-details,
    .table-responsive {
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        box-sizing: border-box;
    }
    
    
    .app-footer {
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .workspace-layout {
        padding: 0.75rem;
    }
    
    .nav-links {
        padding-right: 1.5rem;
    }
    
    .result-total-value {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 0.65rem 1rem;
        font-size: 0.85rem;
    }
}