/* Variables globales */
:root {
    --primary-color: #4a90e2;
    --secondary-color: #6c5ce7;
    --accent-color: #00cec9;
    --dark-color: #2d3436;
    --light-color: #f5f6fa;
    --gray-color: #dfe6e9;
    --text-color: #2c3e50;
    --success-color: #00b894;
    --warning-color: #fdcb6e;
    --danger-color: #e74c3c;
    --chat-sent: #dcf8c6;
    --chat-received: #f2f2f2;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --check-color: #8c8c8c;
    --check-read-color: #4fc3f7;
    --bot-active-color: #4cd137;
    --bot-inactive-color: #718093;
    --ai-color: #9b59b6;
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f0f2f5;
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
}

/* Contenedor principal */
.app-container {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-color);
}

/* Estilos de login */
.login-container {
    background-color: white;
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    animation: fadeIn 0.5s ease-in-out;
}

.login-form h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.input-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--gray-color);
    border-radius: 5px;
    font-size: 16px;
    transition: var(--transition);
}

.input-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: #aaa;
    pointer-events: none;
    transition: var(--transition);
}

.input-group input:focus,
.input-group input:not(:placeholder-shown) {
    border-color: var(--primary-color);
    outline: none;
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    transform: translateY(-25px);
    font-size: 12px;
    color: var(--primary-color);
    background-color: white;
    padding: 0 5px;
}

.input-group input::placeholder {
    opacity: 0;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.login-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}