@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Dark Theme (Default) */
    --bg-main: #0a0d14;
    --bg-card: rgba(18, 24, 38, 0.65);
    --bg-card-solid: #121826;
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Color Palette */
    --color-primary: #3483fa; /* Meli Blue */
    --color-primary-hover: #2968c8;
    --color-accent: #ffe600; /* Meli Yellow */
    --color-accent-text: #2d3238;
    --color-success: #00a650; /* Meli Green */
    --color-success-bg: rgba(0, 166, 80, 0.1);
    --color-danger: #f23d4f;
    --color-danger-bg: rgba(242, 61, 79, 0.1);
    --color-warning: #ff9f00;
    --color-warning-bg: rgba(255, 159, 0, 0.1);
    --color-info: #00b0ff;
    --color-info-bg: rgba(0, 176, 255, 0.1);
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.5);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.2);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --blur: 16px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-main: #f4f6f9;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-solid: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Background elements for dark theme glow */
.blur-bg {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    z-index: -1;
    filter: blur(150px);
    opacity: 0.15;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

[data-theme="light"] .blur-bg {
    opacity: 0.04;
}

.blur-1 {
    background-color: var(--color-primary);
    top: -200px;
    right: -100px;
}

.blur-2 {
    background-color: var(--color-accent);
    bottom: -200px;
    left: -100px;
}

/* Layout */
.app-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--color-accent);
    color: var(--color-accent-text);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    box-shadow: 0 4px 15px rgba(255, 230, 0, 0.3);
}

.logo-text h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-text h1 span {
    color: var(--color-primary);
}

.logo-text p {
    font-size: 12px;
    color: var(--text-secondary);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: scale(1.05);
}

[data-theme="light"] .theme-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* Grid Dashboard */
.dashboard-grid {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Glass Cards */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--blur));
    -webkit-backdrop-filter: blur(var(--blur));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card-title-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title svg {
    color: var(--color-primary);
    width: 20px;
    height: 20px;
}

/* Tabs */
.tabs-container {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    padding: 4px;
    border: 1px solid var(--border-color);
}

[data-theme="light"] .tabs-container {
    background: rgba(0, 0, 0, 0.05);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    padding: 10px 16px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: calc(var(--radius-sm) - 2px);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn.active {
    background: var(--bg-card-solid);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-prefix {
    position: absolute;
    left: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    user-select: none;
}

.input-suffix {
    position: absolute;
    right: 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    user-select: none;
}

input[type="number"], input[type="text"] {
    width: 100%;
    padding: 12px 14px;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition-fast);
}

[data-theme="light"] input[type="number"], [data-theme="light"] input[type="text"] {
    background: #ffffff;
}

.has-prefix input {
    padding-left: 28px;
}

.has-suffix input {
    padding-right: 32px;
}

input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(52, 131, 250, 0.15);
    background: rgba(0, 0, 0, 0.2);
}

[data-theme="light"] input:focus {
    background: #ffffff;
}

/* Sliders */
.range-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.range-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.range-value {
    font-weight: 700;
    color: var(--color-primary);
    background: rgba(52, 131, 250, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 13px;
}

input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    transition: background 0.3s;
}

[data-theme="light"] input[type="range"] {
    background: rgba(0, 0, 0, 0.1);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform var(--transition-fast);
    box-shadow: 0 0 10px rgba(52, 131, 250, 0.4);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Preset Buttons */
.presets-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.preset-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    font-family: var(--font-primary);
    font-size: 13px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}

.preset-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

[data-theme="light"] .preset-btn {
    background: #ffffff;
}

[data-theme="light"] .preset-btn:hover {
    background: rgba(0, 0, 0, 0.03);
}

.preset-btn.active {
    background: rgba(52, 131, 250, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Submit Button */
.btn-primary {
    background: var(--color-accent);
    color: var(--color-accent-text);
    border: none;
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(255, 230, 0, 0.25);
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 230, 0, 0.35);
}

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

/* Advanced Settings Accordion */
.accordion {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.accordion-header {
    background: rgba(255, 255, 255, 0.02);
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    user-select: none;
    transition: background var(--transition-fast);
}

.accordion-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .accordion-header {
    background: rgba(0, 0, 0, 0.01);
}

[data-theme="light"] .accordion-header:hover {
    background: rgba(0, 0, 0, 0.03);
}

.accordion-icon {
    transition: transform var(--transition-normal);
}

.accordion.open .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
    padding: 0 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: rgba(0, 0, 0, 0.05);
}

.accordion.open .accordion-content {
    max-height: 500px;
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

/* Main Display / Results Panel */
.results-wrapper {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Key Metrics Cards */
.metrics-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 16px;
}

@media (max-width: 768px) {
    .metrics-row {
        grid-template-columns: 1fr;
    }
}

.metric-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

[data-theme="light"] .metric-card {
    background: #ffffff;
}

.metric-card.highlight {
    background: linear-gradient(135deg, rgba(52, 131, 250, 0.1) 0%, rgba(52, 131, 250, 0.02) 100%);
    border-color: rgba(52, 131, 250, 0.3);
}

.metric-card.success-border {
    border-color: rgba(0, 166, 80, 0.3);
    background: linear-gradient(135deg, rgba(0, 166, 80, 0.05) 0%, rgba(0, 166, 80, 0.01) 100%);
}

.metric-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.metric-label svg {
    width: 14px;
    height: 14px;
}

.metric-value {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.metric-card.highlight .metric-value {
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-value.success {
    color: var(--color-success);
}

.metric-badge {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: rgba(0, 166, 80, 0.1);
    color: var(--color-success);
    align-self: flex-start;
}

.metric-copy-btn {
    background: rgba(52, 131, 250, 0.1);
    color: var(--color-primary);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

/* Visualization layout */
.visuals-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
}

@media (max-width: 900px) {
    .visuals-container {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    position: relative;
}

.chart-wrapper {
    position: relative;
    width: 100%;
    max-width: 260px;
    margin: 0 auto;
}

/* Breakdown List */
.breakdown-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    justify-content: center;
}

.breakdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

[data-theme="light"] .breakdown-item {
    background: #ffffff;
}

.breakdown-item:hover {
    transform: translateX(4px);
    border-color: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] .breakdown-item:hover {
    border-color: rgba(0, 0, 0, 0.15);
}

.breakdown-item-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
}

.color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.breakdown-item-value {
    font-weight: 700;
    font-size: 14px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.breakdown-item-pct {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Saved items / history */
.history-section {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    margin-top: 12px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.history-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.btn-text-danger {
    background: transparent;
    border: none;
    color: var(--color-danger);
    font-family: var(--font-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.btn-text-danger:hover {
    background: var(--color-danger-bg);
}

.history-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    max-height: 250px;
    overflow-y: auto;
    padding-right: 4px;
}

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

.history-list::-webkit-scrollbar-track {
    background: transparent;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.history-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.history-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}

[data-theme="light"] .history-card {
    background: #ffffff;
}

.history-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.history-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.history-card-name {
    font-weight: 700;
    font-size: 14px;
    max-width: 80%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-card-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: 2px;
    border-radius: 4px;
}

.history-card-delete:hover {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.history-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.history-card-label {
    font-weight: 500;
}

.history-card-value {
    font-weight: 700;
    text-align: right;
    color: var(--text-primary);
}

.history-card-value.highlight {
    color: var(--color-primary);
}

.history-card-value.success {
    color: var(--color-success);
}

/* Save Form Overlay */
.save-dialog {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    align-items: center;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 16px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card-solid);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-sm);
    padding: 12px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-icon {
    color: var(--color-success);
    font-size: 18px;
}

.toast-text {
    font-size: 14px;
    font-weight: 500;
}