/* CSS Moderno y Elegante - Sistema de Diseño Premium */

:root {
    /* Color Palette - HSL Tailored */
    --bg-primary: #0a0b10;
    --bg-secondary: #121420;
    --bg-tertiary: #1a1d30;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;
    
    --accent-blue: #3b82f6;
    --accent-indigo: #6366f1;
    --accent-violet: #8b5cf6;
    --accent-pink: #ec4899;
    
    --grad-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --grad-hover: linear-gradient(135deg, #4f46e5 0%, #9333ea 100%);
    --grad-dark: linear-gradient(180deg, rgba(18, 20, 32, 0.7) 0%, rgba(10, 11, 16, 0.9) 100%);
    
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Spacing & Borders */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --glow-shadow: 0 0 20px rgba(139, 92, 246, 0.15);
}

/* Base resets & layouts */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.5;
}

/* Background glows */
.bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.12;
    z-index: -1;
    pointer-events: none;
}
.bg-glow-1 {
    top: -100px;
    right: -100px;
    background: var(--accent-indigo);
}
.bg-glow-2 {
    bottom: -200px;
    left: -200px;
    background: var(--accent-pink);
}

/* Header styling */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 11, 16, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 2rem;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    font-size: 1.8rem;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-accent {
    color: var(--accent-violet);
    margin: 0 2px;
}

.nav-links {
    display: flex;
    gap: 0.75rem;
}

.nav-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.6rem 1.2rem;
    border-radius: 9999px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.nav-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-btn.active {
    color: var(--text-primary);
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
}

.fav-badge {
    background: var(--grad-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.1rem 0.4rem;
    border-radius: 999px;
    min-width: 18px;
    text-align: center;
    display: inline-block;
}

/* Hero section */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.hero-section {
    text-align: center;
    margin-bottom: 3.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.text-gradient {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
    font-weight: 300;
}

/* Search and filters styling */
.search-filter-container {
    background: rgba(18, 20, 32, 0.6);
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    gap: 0.75rem;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
}

.search-bar {
    position: relative;
    flex-grow: 1;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    color: var(--text-tertiary);
    font-size: 1.1rem;
}

.search-bar input {
    width: 100%;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.9rem 1rem 0.9rem 3rem;
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    outline: none;
    transition: var(--transition-fast);
}

.search-bar input:focus {
    border-color: var(--accent-violet);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.filter-controls {
    display: flex;
    gap: 0.75rem;
}

.select-wrapper {
    position: relative;
}

.select-wrapper select {
    appearance: none;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.9rem 2.5rem 0.9rem 1.25rem;
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: var(--transition-fast);
}

.select-wrapper select:focus {
    border-color: var(--accent-violet);
}

.select-wrapper select option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.select-wrapper::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
    font-size: 0.8rem;
}

/* Stats bar */
.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    max-width: 750px;
    margin: 0 auto 4rem auto;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 35px;
    background: var(--border-color);
}

/* Opportunity section */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.view-toggle {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 0.25rem;
    border-radius: var(--border-radius-sm);
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 38px;
    height: 38px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.view-btn.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

/* Grid Layout vs List Layout */
.opportunities-grid {
    display: grid;
    gap: 1.5rem;
    transition: all var(--transition-normal);
}

.opportunities-grid.grid-layout {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.opportunities-grid.list-layout {
    grid-template-columns: 1fr;
}

/* Opportunity Card styling */
.opportunity-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.opportunity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--grad-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.opportunity-card:hover {
    transform: translateY(-4px);
    border-color: rgba(139, 92, 246, 0.25);
    box-shadow: var(--glow-shadow);
}

.opportunity-card:hover::before {
    opacity: 1;
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.opportunity-badge {
    padding: 0.35rem 0.8rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.type-beca {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

.type-concurso {
    background: rgba(236, 72, 153, 0.15);
    color: #f472b6;
}

.favorite-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: var(--transition-fast);
}

.favorite-btn:hover {
    color: var(--accent-pink);
    transform: scale(1.15);
}

.favorite-btn.active {
    color: var(--accent-pink);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.card-institution {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-weight: 500;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: auto;
}

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

.info-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    margin-bottom: 0.1rem;
}

.info-value {
    font-size: 0.9rem;
    font-weight: 600;
}

.info-value.deadline-alert {
    color: var(--warning);
}

.info-value.deadline-today {
    color: var(--error);
}

/* List view specifics */
.opportunities-grid.list-layout .opportunity-card {
    flex-direction: row;
    align-items: center;
    padding: 1.25rem;
}

.opportunities-grid.list-layout .opportunity-card::before {
    height: 100%;
    width: 4px;
    top: 0;
    bottom: 0;
    left: 0;
}

.opportunities-grid.list-layout .card-content {
    flex-grow: 1;
    display: grid;
    grid-template-columns: 120px 2fr 1.5fr;
    align-items: center;
    gap: 1.5rem;
}

.opportunities-grid.list-layout .card-bottom {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
    width: 250px;
}

/* Loading & Empty state */
.loading-state, .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-violet);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-tertiary);
}

/* Modal Backgrop */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 5, 8, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-backdrop.active .modal-content {
    transform: translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.modal-close-btn:hover {
    background: var(--error);
    color: white;
    border-color: transparent;
}

.modal-header {
    margin-bottom: 2rem;
}

.modal-header h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-top: 0.75rem;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.modal-institution {
    color: var(--text-secondary);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    margin-bottom: 2rem;
}

.modal-info-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.text-gradient-icon {
    font-size: 1.5rem;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-info-item div {
    display: flex;
    flex-direction: column;
}

.modal-info-item strong {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.modal-info-item span {
    font-size: 0.95rem;
    font-weight: 600;
}

.modal-description-section, .modal-requirements-section {
    margin-bottom: 1.75rem;
}

.modal-description-section h3, .modal-requirements-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.modal-description-section p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.modal-requirements-section ul {
    list-style-position: inside;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding-left: 0.5rem;
}

.modal-requirements-section li {
    margin-bottom: 0.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    margin-top: 2rem;
}

.modal-primary-btn {
    background: var(--grad-primary);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    border: none;
    cursor: pointer;
}

.modal-primary-btn:hover {
    background: var(--grad-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.modal-secondary-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-secondary-btn:hover {
    background: rgba(255, 255, 255, 0.04);
}

.modal-secondary-btn.active {
    color: var(--accent-pink);
    border-color: rgba(236, 72, 153, 0.4);
    background: rgba(236, 72, 153, 0.05);
}

/* Footer */
.app-footer {
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 2rem;
    margin-top: 5rem;
    text-align: center;
}

.footer-content p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-tagline {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 600;
}

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

/* Responsive adjustments */
@media (max-width: 900px) {
    .opportunities-grid.list-layout .card-content {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    .opportunities-grid.list-layout .opportunity-card {
        flex-direction: column;
        align-items: stretch;
    }
    .opportunities-grid.list-layout .card-bottom {
        width: 100%;
        border-top: 1px solid var(--border-color);
        padding-top: 1rem;
        margin-top: 1rem;
    }
}

@media (max-width: 768px) {
    .search-filter-container {
        flex-direction: column;
    }
    .filter-controls {
        width: 100%;
    }
    .select-wrapper {
        flex: 1;
    }
    .select-wrapper select {
        width: 100%;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .modal-info-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        width: 100%;
        justify-content: center;
        overflow-x: auto;
        padding-bottom: 0.25rem;
    }
}