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

body {
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(53, 109, 186, 0.22), transparent 28%),
        radial-gradient(circle at bottom right, rgba(120, 144, 176, 0.18), transparent 24%),
        linear-gradient(135deg, #f4f7fb 0%, #e9eff7 46%, #dfe7f1 100%);
    color: #1f2933;
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.container {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1.08fr 0.92fr;
    padding: 24px;
    gap: 24px;
}

.left-panel,
.right-panel {
    position: relative;
    border-radius: 34px;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(77, 54, 26, 0.14);
}

.left-panel {
    padding: 54px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.12), transparent 30%),
        linear-gradient(140deg, rgba(36, 77, 134, 0.96), rgba(53, 109, 186, 0.93) 50%, rgba(128, 160, 201, 0.82));
    color: white;
}

.left-panel::before {
    content: "";
    position: absolute;
    inset: auto -60px -90px auto;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: rgba(255, 248, 235, 0.18);
    filter: blur(8px);
}

.left-panel::after {
    content: "CRM";
    position: absolute;
    top: 42px;
    left: 48px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 4.4rem;
    line-height: 0.9;
    letter-spacing: 0.04em;
    color: rgba(255, 247, 235, 0.16);
}

.left-panel h1 {
    position: relative;
    max-width: 500px;
    margin-bottom: 18px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.8rem, 5vw, 5rem);
    line-height: 0.92;
}

.left-panel p {
    position: relative;
    max-width: 420px;
    font-size: 1.05rem;
    color: rgba(255, 249, 241, 0.9);
}

.right-panel {
    display: grid;
    place-items: center;
    padding: 28px;
    background: rgba(247, 250, 255, 0.82);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(31, 41, 51, 0.08);
}

.login-box {
    width: min(460px, 100%);
    padding: 38px 34px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(31, 41, 51, 0.08);
    box-shadow: 0 22px 44px rgba(92, 68, 37, 0.12);
}

.login-box::before {
    content: "Acceso";
    display: block;
    margin-bottom: 10px;
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #244d86;
}

.login-box h2 {
    margin-bottom: 26px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 2rem;
    color: #1f2933;
}

.error {
    margin-bottom: 18px;
    padding: 12px 14px;
    border-radius: 18px;
    background: rgba(209, 67, 67, 0.12);
    color: #9f2f2f;
    font-weight: 600;
}

form {
    display: grid;
    gap: 16px;
}

.input-group {
    display: flex;
    flex-direction: column-reverse;
    gap: 8px;
}

.input-group label {
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #6b7280;
}

.input-group input {
    width: 100%;
    padding: 15px 16px;
    border-radius: 18px;
    border: 1px solid rgba(31, 41, 51, 0.14);
    background: rgba(255, 255, 255, 0.9);
    color: #1f2933;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.input-group input:focus {
    border-color: rgba(53, 109, 186, 0.55);
    box-shadow: 0 0 0 4px rgba(53, 109, 186, 0.12);
    transform: translateY(-1px);
}

button {
    margin-top: 6px;
    width: 100%;
    padding: 15px 18px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, #4f8dd8, #356dba);
    color: white;
    font-weight: 700;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: 0 16px 28px rgba(53, 109, 186, 0.22);
    transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

button:hover {
    transform: translateY(-1px);
    filter: brightness(1.02);
    box-shadow: 0 20px 36px rgba(53, 109, 186, 0.28);
}

@media (max-width: 980px) {
    .container {
        grid-template-columns: 1fr;
    }

    .left-panel,
    .right-panel {
        min-height: 280px;
    }

    .left-panel {
        padding: 34px 28px;
        justify-content: flex-end;
    }

    .left-panel::after {
        top: 26px;
        left: 28px;
        font-size: 3.2rem;
    }
}

@media (max-width: 560px) {
    .container {
        padding: 12px;
        gap: 12px;
    }

    .left-panel,
    .right-panel,
    .login-box {
        border-radius: 24px;
    }

    .left-panel {
        padding: 26px 22px;
    }

    .login-box {
        padding: 26px 22px;
    }

    .left-panel h1 {
        font-size: 2.3rem;
    }
}