/* CSS Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Color Palette */
    --color-primary: #1A1A2E;
    --color-secondary: #16213E;
    --color-tertiary: #0F3460;
    --color-accent: #E94560;
    --color-white: #FFFFFF;
    
    /* Light Theme Colors */
    --bg-primary: var(--color-white);
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #E9ECEF;
    --text-primary: var(--color-primary);
    --text-secondary: var(--color-secondary);
    --text-muted: #6C757D;
    --border-color: #DEE2E6;
    --shadow: 0 2px 10px rgba(26, 26, 46, 0.1);
    --shadow-hover: 0 4px 20px rgba(26, 26, 46, 0.15);
    --shadow-focus: 0 0 0 3px rgba(233, 69, 96, 0.3);
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Asset Type Colors */
    --color-stock: #28A745;
    --color-fii: #007BFF;
    --color-other: #6F42C1;
    
    /* Status Colors */
    --color-success: #28A745;
    --color-warning: #FFC107;
    --color-danger: #DC3545;
    --color-info: #17A2B8;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: var(--color-primary);
    --bg-secondary: var(--color-secondary);
    --bg-tertiary: var(--color-tertiary);
    --text-primary: var(--color-white);
    --text-secondary: #E9ECEF;
    --text-muted: #ADB5BD;
    --border-color: #495057;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 26, 46, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    text-align: center;
    color: var(--color-white);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.header__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.header__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 60px;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* Navigation */
.nav {
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 73px;
    z-index: 99;
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    justify-content: center;
}

.nav__link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-accent);
    background-color: var(--bg-primary);
}

.nav__link--active::after {
    width: 100%;
}

/* Main */
.main {
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - 200px);
}

/* Section */
.section {
    margin-bottom: var(--spacing-3xl);
    scroll-margin-top: 150px;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-tertiary));
    transform: translateX(-50%);
    border-radius: var(--border-radius-sm);
}

.section__description {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Asset Form */
.asset-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
}

.asset-form:hover {
    box-shadow: var(--shadow-hover);
}

/* Form Styles */
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form__group {
    display: flex;
    flex-direction: column;
    position: relative;
}

.form__group--checkbox {
    flex-direction: row;
    align-items: flex-start;
    grid-column: 1 / -1;
    gap: var(--spacing-md);
}

.form__label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.required {
    color: var(--color-accent);
    font-weight: 700;
}

.form__help {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
}

.form__input,
.form__select {
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.form__input:focus,
.form__select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-focus);
    transform: translateY(-1px);
}

.form__input:valid,
.form__select:valid {
    border-color: var(--color-success);
}

.form__select--small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* Checkbox Styles */
.form__checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}

.form__checkbox {
    display: none;
}

.form__checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-right: var(--spacing-md);
    position: relative;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    margin-top: 2px;
}

.form__checkbox:checked + .form__checkbox-custom {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.1);
}

.form__checkbox:checked + .form__checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: bold;
}

.form__checkbox-help {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    font-weight: 400;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    font-family: inherit;
    min-height: 44px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent), #d63850);
    color: var(--color-white);
    box-shadow: var(--shadow);
}

.btn--primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #d63850, var(--color-accent));
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn--secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn--secondary:hover:not(:disabled) {
    background-color: var(--border-color);
    transform: translateY(-1px);
}

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

.btn--danger:hover:not(:disabled) {
    background-color: #c82333;
    transform: translateY(-1px);
}

.btn--small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn__loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
}

.btn.loading .btn__text,
.btn.loading .btn__icon {
    opacity: 0;
}

.btn.loading .btn__loading {
    display: block;
}

.btn__spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid var(--color-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.form__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-start;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Assets List */
.assets-list {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition-normal);
}

.assets-list__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.assets-list__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.assets-list__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.assets-list__count {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-weight: 500;
}

.assets-list__content {
    padding: var(--spacing-lg);
    min-height: 120px;
}

.assets-list__empty {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.empty-state {
    text-align: center;
    max-width: 400px;
}

.empty-state__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state__description {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Asset Item */
.asset-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
    position: relative;
}

.asset-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--color-accent);
    border-radius: var(--border-radius-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.asset-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.asset-item:hover::before {
    opacity: 1;
}

.asset-item:last-child {
    margin-bottom: 0;
}

.asset-item__type {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
    position: relative;
}

.asset-item__type::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.2;
    transition: all var(--transition-fast);
}

.asset-item:hover .asset-item__type::after {
    opacity: 0.4;
    transform: translate(-50%, -50%) scale(1.5);
}

.asset-item__type--stock {
    background-color: var(--color-stock);
}

.asset-item__type--stock::after {
    background-color: var(--color-stock);
}

.asset-item__type--fii {
    background-color: var(--color-fii);
}

.asset-item__type--fii::after {
    background-color: var(--color-fii);
}

.asset-item__type--other {
    background-color: var(--color-other);
}

.asset-item__type--other::after {
    background-color: var(--color-other);
}

.asset-item__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    min-width: 0;
}

.asset-item__name {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
}

.asset-item__details {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    word-break: break-word;
}

.asset-item__yield {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-accent);
    text-align: right;
}

.asset-item__remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    font-size: var(--font-size-lg);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.asset-item__remove:hover {
    background-color: var(--color-danger);
    color: var(--color-white);
    transform: scale(1.1);
}

/* Results Summary */
.results-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.results-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.results-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-tertiary));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.results-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.results-card:hover::before {
    transform: scaleX(1);
}

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

.results-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.results-card__icon {
    font-size: var(--font-size-xl);
    opacity: 0.7;
}

.results-card__value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-accent), var(--color-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-card__change {
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    display: inline-block;
}

.results-card__change--positive {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--color-success);
}

.results-card__change--negative {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--color-danger);
}

/* Detailed Results */
.detailed-results {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow);
}

.detailed-results__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.detailed-results__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.detailed-results__controls {
    display: flex;
    gap: var(--spacing-sm);
}

.detailed-results__empty {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
}

.detailed-result-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
}

.detailed-result-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.detailed-result-item:last-child {
    margin-bottom: 0;
}

.detailed-result-item__type {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.detailed-result-item__name {
    font-weight: 700;
    color: var(--text-primary);
    min-width: 0;
}

.detailed-result-item__monthly,
.detailed-result-item__annual,
.detailed-result-item__yield {
    font-weight: 600;
    text-align: right;
    font-size: var(--font-size-sm);
}

.detailed-result-item__monthly {
    color: var(--color-stock);
}

.detailed-result-item__annual {
    color: var(--color-fii);
}

.detailed-result-item__yield {
    color: var(--color-accent);
}

/* Chart Container */
.chart-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    position: relative;
}

.chart-container__header {
    margin-bottom: var(--spacing-lg);
}

.chart-container__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.chart-controls {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.chart-controls__label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 600;
    color: var(--text-primary);
}

.chart-wrapper {
    position: relative;
    height: 400px;
    margin: 0 auto;
}

.chart-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-muted);
    display: none;
}

.chart-loading.show {
    display: block;
}

#dividendChart {
    max-width: 100%;
    height: auto;
    transition: opacity var(--transition-normal);
}

/* FAQ */
.faq {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
}

.faq__item:hover {
    box-shadow: var(--shadow-hover);
}

.faq__question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.faq__question:hover {
    background-color: var(--bg-tertiary);
}

.faq__question:focus {
    outline: none;
    box-shadow: inset var(--shadow-focus);
}

.faq__question[aria-expanded="true"] {
    background-color: var(--bg-tertiary);
}

.faq__question[aria-expanded="true"] .faq__icon {
    transform: rotate(45deg);
}

.faq__icon {
    font-size: var(--font-size-xl);
    font-weight: 300;
    transition: transform var(--transition-fast);
    min-width: 24px;
    text-align: center;
}

.faq__answer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    display: none;
}

.faq__answer.show {
    display: block;
    animation: fadeInDown var(--transition-normal) ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Footer */
.footer {
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer__text {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer__link {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.footer__link:hover {
    text-decoration: underline;
    color: var(--color-tertiary);
}

.footer__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.footer__separator {
    opacity: 0.5;
}

/* Error States */
.error {
    border-color: var(--color-danger) !important;
    background-color: rgba(220, 53, 69, 0.05);
}

.error-message {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.error-message::before {
    content: '⚠️';
    font-size: var(--font-size-xs);
}

/* Success States */
.success {
    border-color: var(--color-success) !important;
    background-color: rgba(40, 167, 69, 0.05);
}

.success-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--color-success);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-hover);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    animation: slideInRight var(--transition-normal) ease-out;
}

@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;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header {
        position: relative;
    }
    
    .nav {
        position: relative;
        top: 0;
    }
    
    .header__content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .nav__list {
        justify-content: center;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .section__title {
        font-size: var(--font-size-2xl);
    }
    
    .form__row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .form__actions {
        flex-direction: column;
    }
    
    .asset-item {
        grid-template-columns: auto 1fr auto;
        gap: var(--spacing-md);
    }
    
    .asset-item__yield {
        grid-column: 2 / 3;
        text-align: right;
    }
    
    .asset-item__remove {
        grid-column: 3 / 4;
    }
    
    .results-summary {
        grid-template-columns: 1fr;
    }
    
    .results-card__value {
        font-size: var(--font-size-2xl);
    }
    
    .detailed-result-item {
        grid-template-columns: auto 1fr;
        gap: var(--spacing-md);
    }
    
    .detailed-result-item__monthly,
    .detailed-result-item__annual,
    .detailed-result-item__yield {
        grid-column: 2 / 3;
        text-align: left;
        font-size: var(--font-size-xs);
        display: block;
    }
    
    .detailed-results__header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .chart-wrapper {
        height: 300px;
    }
    
    .footer__content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .asset-form,
    .assets-list,
    .detailed-results,
    .chart-container {
        margin-left: calc(-1 * var(--spacing-sm));
        margin-right: calc(-1 * var(--spacing-sm));
        border-radius: 0;
    }
    
    .success-message {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        top: var(--spacing-sm);
    }
    
    .chart-wrapper {
        height: 250px;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    }
}

/* Focus Styles */
*:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn:focus-visible,
.form__input:focus-visible,
.form__select:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

/* Print Styles */
@media print {
    .header,
    .nav,
    .footer,
    .btn,
    .theme-toggle {
        display: none !important;
    }
    
    .main {
        padding: 0;
    }
    
    .section {
        break-inside: avoid;
        margin-bottom: var(--spacing-lg);
    }
    
    .chart-container {
        break-inside: avoid;
    }
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

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

.mb-0 {
    margin-bottom: 0 !important;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-accent);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}