/* ===================================
   EDUmind AI Pro - Main Stylesheet
   Hybrid design: mi_app_mistral + EDUmind
   =================================== */

:root {
    /* Primary Colors - Gradient Theme */
    --edumind-primary-start: #667eea;
    --edumind-primary-end: #764ba2;
    --edumind-accent: #f093fb;
    --edumind-accent-alt: #f5576c;

    /* Surfaces */
    --edumind-surface: rgba(255, 255, 255, 0.95);
    --edumind-surface-alt: rgba(255, 255, 255, 0.85);
    --edumind-surface-glass: rgba(255, 255, 255, 0.75);
    --edumind-border: rgba(255, 255, 255, 0.4);

    /* Text */
    --edumind-text: #1a1a2e;
    --edumind-text-muted: #4a4a6a;
    --edumind-text-light: #6a6a8a;

    /* Engine Colors */
    --engine-deepseek: #0066cc;
    --engine-claude: #7c3aed;
    --engine-gemini: #ea4335;
    --engine-mistral: #f97316;
    --engine-edumind: #10b981;

    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.16);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);

    /* Radius */
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* Reset & Base */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body.edumind-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--edumind-text);
    background: linear-gradient(135deg, var(--edumind-primary-start), var(--edumind-primary-end));
    position: relative;
    padding-bottom: 80px;
}

/* Gradient Overlay */
.edumind-gradient {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(240, 147, 251, 0.15), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(102, 126, 234, 0.1), transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Navigation */
.edumind-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: relative;
    z-index: 100;
    flex-wrap: wrap;
    gap: 1rem;
}

.edumind-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: white;
}

.edumind-logo {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-md);
}

.edumind-logo__icon {
    font-size: 1.8rem;
}

.edumind-brand__text {
    display: flex;
    flex-direction: column;
}

.edumind-brand__title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.02em;
}

.edumind-brand__subtitle {
    font-size: 0.75rem;
    opacity: 0.85;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.edumind-nav__links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.edumind-chip {
    padding: 0.5rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: white;
    font-weight: 500;
    font-size: 0.875rem;
    text-decoration: none;
    transition: all var(--transition-medium);
    white-space: nowrap;
}

.edumind-chip:hover,
.edumind-chip.active {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.edumind-chip--config {
    background: rgba(16, 185, 129, 0.25);
    border-color: rgba(16, 185, 129, 0.4);
}

.edumind-chip--admin {
    background: rgba(124, 58, 237, 0.25);
    border-color: rgba(124, 58, 237, 0.4);
}

.edumind-chip--logout {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.3);
}

/* Main Shell */
.edumind-shell {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    background: var(--edumind-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--edumind-border);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
}

/* Alerts */
.edumind-alerts {
    margin-bottom: 1.5rem;
}

.edumind-alerts .alert {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow-sm);
}

/* Engine Selector Bar */
.edumind-engine-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--edumind-surface-alt);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.edumind-engine-bar__label {
    font-weight: 600;
    color: var(--edumind-text-muted);
    font-size: 0.875rem;
}

.edumind-engine-selector {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.edumind-engine-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    border: 2px solid transparent;
    background: white;
    color: var(--edumind-text);
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-medium);
    box-shadow: var(--shadow-sm);
}

.edumind-engine-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.edumind-engine-btn.active {
    background: linear-gradient(135deg, var(--edumind-primary-start), var(--edumind-primary-end));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.edumind-engine-btn[data-motor="deepseek"].active {
    background: var(--engine-deepseek);
}

.edumind-engine-btn[data-motor="claude"].active {
    background: var(--engine-claude);
}

.edumind-engine-btn[data-motor="gemini"].active {
    background: var(--engine-gemini);
}

.edumind-engine-btn[data-motor="mistral"].active {
    background: var(--engine-mistral);
}

.edumind-engine-btn[data-motor="edumind"].active {
    background: var(--engine-edumind);
}

.edumind-engine-btn__status {
    font-size: 0.75rem;
}

.edumind-engine-btn__status--active {
    color: var(--engine-edumind);
}

.edumind-engine-btn__status--default {
    color: var(--engine-edumind);
}

.edumind-engine-btn__status--inactive {
    color: var(--edumind-text-light);
}

/* Cards */
.edumind-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
}

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

.edumind-card--gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.edumind-card--pink {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.edumind-card--cyan {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.edumind-card--green {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: white;
}

.edumind-card a {
    text-decoration: none;
    color: inherit;
}

/* Grid */
.edumind-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Forms */
.edumind-form {
    background: var(--edumind-surface-alt);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.edumind-form__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--edumind-text);
}

.form-label {
    font-weight: 500;
    color: var(--edumind-text);
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 0, 0, 0.1);
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--edumind-primary-start);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Buttons */
.btn {
    border-radius: 999px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-medium);
}

.btn-primary {
    background: linear-gradient(135deg, var(--edumind-primary-start), var(--edumind-primary-end));
    border: none;
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--edumind-primary-start), var(--edumind-primary-end));
}

.btn-secondary {
    background: white;
    border: 2px solid rgba(0, 0, 0, 0.1);
    color: var(--edumind-text);
}

.btn-secondary:hover {
    background: var(--edumind-surface-alt);
    border-color: var(--edumind-primary-start);
    color: var(--edumind-primary-start);
}

.btn-success {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    border: none;
    color: white;
}

.btn-danger {
    background: linear-gradient(135deg, #eb3349, #f45c43);
    border: none;
    color: white;
}

/* Output Area */
.edumind-output {
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 2px dashed rgba(102, 126, 234, 0.25);
    min-height: 200px;
    margin-top: 1.5rem;
    position: relative;
}

.edumind-output__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.edumind-output__title {
    font-weight: 600;
    color: var(--edumind-text);
}

.edumind-output__engine {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    background: var(--edumind-surface-alt);
    color: var(--edumind-text-muted);
}

.edumind-output__content {
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.7;
    color: var(--edumind-text);
}

.edumind-output__loading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--edumind-text-muted);
}

.edumind-output__spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(102, 126, 234, 0.2);
    border-top-color: var(--edumind-primary-start);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Page Headers */
.edumind-page-header {
    margin-bottom: 2rem;
}

.edumind-page-header__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--edumind-text);
    margin-bottom: 0.5rem;
}

.edumind-page-header__subtitle {
    color: var(--edumind-text-muted);
    font-size: 1.1rem;
}

/* Hero Cards */
.edumind-hero-card {
    padding: 2rem;
    border-radius: var(--radius-xl);
    color: white;
    margin-bottom: 2rem;
}

.edumind-hero-card h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.edumind-hero-card p {
    opacity: 0.9;
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* Footer */
.edumind-footer {
    text-align: center;
    padding: 2rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    position: relative;
    z-index: 10;
}

/* Responsive */
@media (max-width: 768px) {
    .edumind-nav {
        justify-content: center;
        text-align: center;
    }

    .edumind-shell {
        margin: 1rem;
        padding: 1.5rem;
    }

    .edumind-engine-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .edumind-engine-selector {
        justify-content: center;
    }

    .edumind-page-header__title {
        font-size: 1.5rem;
    }
}

/* Markdown Rendering */
.edumind-output__content h1,
.edumind-output__content h2,
.edumind-output__content h3,
.edumind-output__content h4 {
    font-family: 'Space Grotesk', sans-serif;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--edumind-text);
}

.edumind-output__content h1 {
    font-size: 1.5rem;
}

.edumind-output__content h2 {
    font-size: 1.3rem;
}

.edumind-output__content h3 {
    font-size: 1.15rem;
}

.edumind-output__content h4 {
    font-size: 1rem;
}

.edumind-output__content ul,
.edumind-output__content ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.edumind-output__content li {
    margin-bottom: 0.5rem;
}

.edumind-output__content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.edumind-output__content th,
.edumind-output__content td {
    padding: 0.75rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    text-align: left;
}

.edumind-output__content th {
    background: var(--edumind-surface-alt);
    font-weight: 600;
}

.edumind-output__content code {
    background: var(--edumind-surface-alt);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9em;
}

.edumind-output__content pre {
    background: var(--edumind-text);
    color: white;
    padding: 1rem;
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.edumind-output__content pre code {
    background: transparent;
    padding: 0;
}

/* Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--edumind-primary-start), var(--edumind-primary-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}