/* ========================================
   ApexPilot Design System
   ======================================== */

/* Design Tokens / CSS Variables */
:root {
    /* Color Palette - Dark Theme */
    --color-bg-primary: #0d1117;
    --color-bg-secondary: #161b22;
    --color-bg-tertiary: #21262d;
    --color-bg-elevated: #1c2128;
    --color-bg-hover: #262c36;

    /* Accent Colors */
    --color-accent-primary: #58a6ff;
    --color-accent-secondary: #388bfd;
    --color-accent-tertiary: #1f6feb;
    --color-accent-muted: #264778;

    /* Semantic Colors */
    --color-success: #3fb950;
    --color-success-muted: #238636;
    --color-warning: #d29922;
    --color-warning-muted: #9e6a03;
    --color-error: #f85149;
    --color-error-muted: #da3633;
    --color-info: #58a6ff;

    /* Text Colors */
    --color-text-primary: #e6edf3;
    --color-text-secondary: #8b949e;
    --color-text-tertiary: #6e7681;
    --color-text-muted: #484f58;
    --color-text-inverse: #0d1117;

    /* Border Colors */
    --color-border-primary: #30363d;
    --color-border-secondary: #21262d;
    --color-border-muted: #161b22;

    /* Typography */
    --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.8125rem;    /* 13px */
    --font-size-base: 0.875rem;   /* 14px */
    --font-size-md: 1rem;         /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Spacing */
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
}

/* ========================================
   App Container
   ======================================== */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ========================================
   Header
   ======================================== */

.app-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border-primary);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-3) var(--spacing-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent-primary);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.logo-badge {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: 2px 6px;
    background-color: var(--color-accent-muted);
    color: var(--color-accent-primary);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.api-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-success);
    animation: pulse 2s infinite;
}

.status-dot.error {
    background-color: var(--color-error);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-6);
    width: 100%;
}

/* ========================================
   Tab Navigation
   ======================================== */

.tab-navigation {
    display: flex;
    gap: var(--spacing-1);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-1);
    margin-bottom: var(--spacing-6);
}

.tab-button {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-button:hover {
    color: var(--color-text-primary);
    background-color: var(--color-bg-hover);
}

.tab-button.active {
    color: var(--color-text-primary);
    background-color: var(--color-bg-tertiary);
    box-shadow: var(--shadow-sm);
}

.tab-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ========================================
   Tab Panels
   ======================================== */

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: var(--spacing-6);
}

.panel-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.panel-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* ========================================
   Layout Sections
   ======================================== */

.generator-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

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

.input-section,
.output-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.section-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.input-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.output-actions {
    display: flex;
    gap: var(--spacing-2);
}

/* ========================================
   Form Elements
   ======================================== */

.code-input {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    resize: vertical;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.code-input.code-font {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

.code-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-muted);
}

.code-input::placeholder {
    color: var(--color-text-tertiary);
}

.code-input-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.code-input-wrapper .code-input {
    flex: 1;
    min-height: 300px;
}

.select-input {
    padding: var(--spacing-2) var(--spacing-3);
    padding-right: var(--spacing-8);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-sm);
    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='%238b949e' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
}

.select-input:focus {
    outline: none;
    border-color: var(--color-accent-primary);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-accent-primary);
    cursor: pointer;
}

/* ========================================
   Buttons
   ======================================== */

.input-actions {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-2);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
}

.btn-primary:hover {
    background-color: var(--color-accent-secondary);
}

.btn-primary:active {
    background-color: var(--color-accent-tertiary);
}

.btn-primary:disabled {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

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

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

.btn-icon {
    width: 16px;
    height: 16px;
}

.btn-icon-only {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    background-color: transparent;
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon-only:hover:not(:disabled) {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.btn-icon-only:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon-only svg {
    width: 16px;
    height: 16px;
}

/* ========================================
   Code Output
   ======================================== */

.code-output-wrapper {
    position: relative;
    flex: 1;
    min-height: 300px;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-output {
    margin: 0;
    padding: var(--spacing-4);
    background-color: transparent !important;
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    overflow-x: auto;
    min-height: 100%;
}

.code-output code {
    background: transparent !important;
    font-family: inherit;
}

/* Line numbers styling */
.code-output.line-numbers {
    padding-left: 3.8em;
}

.output-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-4);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    background-color: var(--color-bg-secondary);
}

.output-placeholder.hidden {
    display: none;
}

.placeholder-icon {
    width: 48px;
    height: 48px;
    opacity: 0.5;
}

/* ========================================
   SOQL Results
   ======================================== */

.soql-results {
    position: relative;
    flex: 1;
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.soql-output-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.warnings-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.warning-card {
    display: flex;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.warning-card.error {
    background-color: rgba(248, 81, 73, 0.1);
    border: 1px solid rgba(248, 81, 73, 0.3);
    color: var(--color-error);
}

.warning-card.warning {
    background-color: rgba(210, 153, 34, 0.1);
    border: 1px solid rgba(210, 153, 34, 0.3);
    color: var(--color-warning);
}

.warning-card.info {
    background-color: rgba(88, 166, 255, 0.1);
    border: 1px solid rgba(88, 166, 255, 0.3);
    color: var(--color-info);
}

.warning-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.warning-content {
    flex: 1;
}

.warning-title {
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-1);
}

.warning-message {
    opacity: 0.9;
}

.result-section-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.optimized-query-section .code-output {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    min-height: auto;
}

.suggestions-section {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
}

.suggestion-item {
    display: flex;
    gap: var(--spacing-3);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.suggestion-item + .suggestion-item {
    border-top: 1px solid var(--color-border-secondary);
}

.suggestion-icon {
    width: 16px;
    height: 16px;
    color: var(--color-success);
    flex-shrink: 0;
    margin-top: 2px;
}

/* ========================================
   Loading Overlay
   ======================================== */

.loading-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background-color: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(4px);
    z-index: var(--z-overlay);
}

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

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border-primary);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.loading-subtext {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    z-index: var(--z-toast);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    animation: slideIn var(--transition-base);
    max-width: 360px;
}

.toast.success {
    border-left: 3px solid var(--color-success);
}

.toast.error {
    border-left: 3px solid var(--color-error);
}

.toast.info {
    border-left: 3px solid var(--color-info);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    color: var(--color-success);
}

.toast.error .toast-icon {
    color: var(--color-error);
}

.toast.info .toast-icon {
    color: var(--color-info);
}

.toast-message {
    color: var(--color-text-primary);
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: var(--spacing-1);
    margin-left: auto;
}

.toast-close:hover {
    color: var(--color-text-secondary);
}

/* ========================================
   Prism.js Overrides for Dark Theme
   ======================================== */

code[class*="language-"],
pre[class*="language-"] {
    color: var(--color-text-primary);
    text-shadow: none;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
    color: var(--color-text-tertiary);
}

.token.punctuation {
    color: var(--color-text-secondary);
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol {
    color: #79c0ff;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin {
    color: #a5d6ff;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string,
.token.variable {
    color: #ff7b72;
}

.token.atrule,
.token.attr-value,
.token.function {
    color: #d2a8ff;
}

.token.keyword {
    color: #ff7b72;
}

.token.regex,
.token.important {
    color: #ffa657;
}

.token.class-name {
    color: #ffa657;
}

/* Line numbers */
.line-numbers .line-numbers-rows {
    border-right: 1px solid var(--color-border-primary);
}

.line-numbers-rows > span:before {
    color: var(--color-text-muted);
}

/* ========================================
   Mobile Responsive
   ======================================== */

@media (max-width: 768px) {
    .header-content {
        padding: var(--spacing-3) var(--spacing-4);
    }

    .main-content {
        padding: var(--spacing-4);
    }

    .tab-navigation {
        flex-direction: column;
    }

    .tab-button {
        justify-content: flex-start;
    }

    .tab-button span {
        display: inline;
    }

    .input-options {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .code-input-wrapper .code-input {
        min-height: 200px;
    }

    .code-output-wrapper {
        min-height: 250px;
    }

    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
    }

    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: var(--font-size-md);
    }

    .logo-badge {
        display: none;
    }

    .status-text {
        display: none;
    }

    .panel-title {
        font-size: var(--font-size-lg);
    }

    .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-sm);
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}