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

:root {
    --primary-color: #10b981;
    --primary-hover: #059669;
    --primary-light: rgba(16, 185, 129, 0.15);
    --secondary-color: #1DB954;
    
    /* Dark mode colors */
    --bg-dark: #0a0a0a;
    --bg-dark-secondary: #111111;
    --card-bg: #1a1a1a;
    --card-bg-hover: #1f1f1f;
    --text-primary: #ffffff;
    --text-secondary: #a3a3a3;
    --text-tertiary: #737373;
    --border-color: #2a2a2a;
    --border-hover: #3a3a3a;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.3);
    
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0.75rem;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}

/* Móviles pantalla pequeña (320px - 374px) */
@media (min-width: 320px) {
    body {
        padding: 0.75rem;
    }
}

/* Móviles pantalla mediana (375px - 424px) */
@media (min-width: 375px) {
    body {
        padding: 1rem;
    }
}

/* Móviles pantalla grande (425px - 767px) */
@media (min-width: 425px) {
    body {
        padding: 1.25rem;
    }
}

/* Tablets (768px - 1023px) */
@media (min-width: 768px) {
    body {
        padding: 1.5rem;
    }
}

/* Ordenadores (1024px+) */
@media (min-width: 1024px) {
    body {
        padding: 2rem;
    }
}

/* Grid Background */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-image: 
        linear-gradient(rgba(16, 185, 129, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 185, 129, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    background-position: center center;
    pointer-events: none;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .grid-background {
        background-size: 40px 40px;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .grid-background {
        background-size: 50px 50px;
    }
}

/* Tablets */
@media (min-width: 768px) {
    .grid-background {
        background-size: 60px 60px;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .grid-background {
        background-size: 80px 80px;
    }
}

.grid-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-dark) 100%);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    animation: fadeIn 0.6s ease-out;
    position: relative;
    z-index: 1;
    width: 100%;
    padding: 0;
}

/* Asegurar que el contenedor no se desborde en ningún dispositivo */
@media (max-width: 374px) {
    .container {
        max-width: 100%;
    }
}

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

.header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    max-width: 100%;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .header {
        margin-bottom: 1.75rem;
        padding: 1rem;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .header {
        margin-bottom: 2rem;
    }
}

/* Tablets */
@media (min-width: 768px) {
    .header {
        margin-bottom: 2.5rem;
        padding: 1.5rem;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .header {
        margin-bottom: 3rem;
        padding: 2rem;
    }
}

.header h1 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    flex-wrap: wrap;
    word-break: break-word;
    max-width: 100%;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .header h1 {
        font-size: 1.75rem;
        gap: 0.625rem;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .header h1 {
        font-size: 2rem;
        gap: 0.75rem;
    }
}

/* Tablets */
@media (min-width: 768px) {
    .header h1 {
        font-size: 2.5rem;
        gap: 0.875rem;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .header h1 {
        font-size: 3rem;
        gap: 1rem;
    }
}

.logo-icon {
    font-size: 1.75rem;
    animation: bounce 2s infinite;
    filter: drop-shadow(0 0 10px rgba(16, 185, 129, 0.5));
    flex-shrink: 0;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .logo-icon {
        font-size: 2rem;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .logo-icon {
        font-size: 2.25rem;
    }
}

/* Tablets */
@media (min-width: 768px) {
    .logo-icon {
        font-size: 3rem;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .logo-icon {
        font-size: 3.5rem;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 400;
    max-width: 100%;
    padding: 0 0.5rem;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .subtitle {
        font-size: 0.9rem;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .subtitle {
        font-size: 1rem;
        padding: 0;
    }
}

/* Tablets y superiores */
@media (min-width: 768px) {
    .subtitle {
        font-size: 1.1rem;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .subtitle {
        font-size: 1.2rem;
    }
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 100%;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .main-grid {
        gap: 1.35rem;
    }
}

/* Móviles pantalla grande */
@media (min-width: 425px) {
    .main-grid {
        gap: 1.5rem;
    }
}

/* Tablets */
@media (min-width: 768px) {
    .main-grid {
        gap: 1.75rem;
        margin-bottom: 2.75rem;
    }
}

/* Ordenadores */
@media (min-width: 1024px) {
    .main-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        margin-bottom: 3rem;
    }
}

/* Pantallas muy grandes */
@media (min-width: 1400px) {
    .main-grid {
        gap: 2.5rem;
    }
}

.left-column {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 100%;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .left-column {
        gap: 1.35rem;
    }
}

/* Móviles pantalla grande y superiores */
@media (min-width: 425px) {
    .left-column {
        gap: 1.5rem;
    }
}

.right-column {
    position: relative;
}

@media (min-width: 1024px) {
    .right-column {
        position: sticky;
        top: 2rem;
        height: fit-content;
    }
}

.hidden {
    display: none !important;
}

/* Smooth transitions for showing/hiding elements */
.card-animate {
    animation: slideIn 0.4s ease-out;
}

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

/* Footer */
.footer {
    margin-top: 3rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    max-width: 100%;
}

/* Móviles pantalla mediana y superiores */
@media (min-width: 375px) {
    .footer {
        margin-top: 3.5rem;
        padding: 1.75rem 0;
    }
}

/* Tablets y superiores */
@media (min-width: 768px) {
    .footer {
        margin-top: 4rem;
        padding: 2rem 0;
    }
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    text-align: center;
    max-width: 100%;
    padding: 0 0.5rem;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .footer-content {
        padding: 0 0.75rem;
    }
}

/* Tablets y superiores */
@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        padding: 0;
    }
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 400;
    max-width: 100%;
    word-break: break-word;
}

/* Móviles pantalla mediana y superiores */
@media (min-width: 375px) {
    .footer-text {
        font-size: 0.85rem;
    }
}

/* Móviles pantalla grande y superiores */
@media (min-width: 425px) {
    .footer-text {
        font-size: 0.875rem;
    }
}

.footer-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.footer-social:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.footer-social svg {
    width: 20px;
    height: 20px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark-secondary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

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

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-dark-secondary);
}

/* Button Group for credentials */
.button-group {
    display: flex;
    gap: 0.75rem;
    flex-direction: column;
    width: 100%;
}

/* Móviles pantalla mediana */
@media (min-width: 375px) {
    .button-group {
        gap: 0.75rem;
    }
}

/* Móviles pantalla grande y superiores */
@media (min-width: 425px) {
    .button-group {
        gap: 0.75rem;
    }
}

/* Tablets y superiores */
@media (min-width: 640px) {
    .button-group {
        flex-direction: row;
    }
}

/* Asegurar que los botones en grupo no se desborden */
.button-group .btn {
    flex: 1;
    min-width: 0;
}